DSM-5-TR Diagnostic Codes for Mental Health Providers: 2026 Coding Guide

A mental health diagnosis can be clinically sound and still cause a billing problem.

The issue may be an outdated code. The note may not support the severity reported. The code may not be valid for the date of service. A clinician may also document “rule out PTSD” during an assessment, only for the condition to reach the outpatient claim as a confirmed diagnosis.

That creates a mismatch between the assessment, treatment plan, problem list, and claim.

This DSM-5-TR Diagnostic Codes Guide explains how DSM-5-TR and ICD-10-CM work together in 2026. It includes, but is not limited to, date of service code releases, common mental health diagnosis code releases, reporting requirements for outpatient services, clinical documentation, psychotherapy notes, and current 42 CFR Part 2 requirements.

It is a practical coding workflow guide rather than a replacement for the DSM-5-TR manual or the current ICD-10-CM code set.

What Are DSM-5-TR Diagnostic Codes?

DSM-5-TR diagnostic coding is the process of establishing a diagnosis with DSM-5-TR criteria and recording the related ICD-10-CM code.

The DSM-5-TR is the standard classification of mental disorders used by mental health professionals in the USA. It provides diagnostic criteria and clinical information about symptoms, duration, course, functional effects, risk factors, culture, and differential diagnosis.

However, DSM-5-TR does not maintain a separate claim code system. The term DSM-5-TR Diagnosis Codes commonly refers to the ICD-10-CM codes printed beside diagnoses in the manual.

The American Psychiatric Association states that there are no separate DSM codes. The codes shown beside DSM-5-TR diagnoses come from ICD-10-CM. Clinicians use those ICD-10-CM codes when submitting diagnoses on U.S. healthcare claims.

• DSM-5-TR helps establish the diagnosis.
• ICD-10-CM supplies the diagnosis code.
• CPT or HCPCS identifies the service provided.

A psychotherapy claim typically reports an ICD-10-CM diagnosis code and a CPT or applicable HCPCS service code. One identifies the patient’s condition. The other identifies the work performed.

DSM-5-TR vs. ICD-10-CM vs. CPT and HCPCS

DSM-5-TR answers what condition best explains the clinical findings. ICD-10-CM identifies the reportable diagnosis. CPT is HCPCS Level I and identifies professional services and procedures. 

HCPCS Level II identifies certain additional services, products, equipment, and supplies. The systems work together, but they are not interchangeable.

System	Primary role	Used for
DSM-5-TR	Clinical diagnosis	Criteria, differential diagnosis, specifiers, and clinical description
ICD-10-CM	Diagnosis reporting	Reporting the diagnosis or reason for the encounter
CPT and HCPCS	Service and item reporting	Reporting professional services and procedures, along with certain additional services, drugs, products, equipment, and supplies.

Which ICD-10-CM Release Applies in 2026?

Use the ICD-10-CM release that is active on the patient’s date of service.

Date of service	Applicable code release
January 1 through March 31, 2026	FY2026 release effective October 1, 2025
April 1 through September 30, 2026	FY2026 release effective April 1, 2026
October 1 through December 31, 2026	FY2027 release effective October 1, 2026

The April 1, 2026 release replaces the October 1, 2025 release for services provided from April 1 through September 30, 2026.

The United States continues to use ICD-10-CM for diagnosis reporting in 2026. FY2027 ICD-10-CM files become effective October 1, 2026.

Common DSM-5-TR Diagnoses and Their ICD-10-CM Codes

It’s a starting reference, not a complete code list. Confirm episode type, severity, and specificity against the chart before finalizing any code, and verify anything unfamiliar in the current CDC ICD-10-CM browser.

A valid code does not by itself establish payer coverage, authorization, or medical necessity.

DSM-5-TR diagnosis	ICD-10-CM code	What the record should support
Major depressive disorder, single episode, mild	F32.0	One depressive episode, mild severity, symptoms, functional effects, and relevant exclusions
Major depressive disorder, single episode, moderate	F32.1	One depressive episode, moderate severity, symptoms, functional effects, and relevant exclusions
Major depressive disorder, single episode, severe without psychotic features	F32.2	A confirmed single episode with severity supported by symptom burden, intensity, functional effects, and absence of psychotic features
Major depressive disorder, single episode, unspecified	F32.9	A confirmed single major depressive episode without enough detail to assign a more specific F32 code
Major depressive disorder, recurrent, mild	F33.0	A current mild episode, at least one separate prior major depressive episode, and documentation supporting mild severity
Major depressive disorder, recurrent, moderate	F33.1	A current moderate episode, at least one separate prior major depressive episode, and documentation supporting moderate severity
Unspecified depressive disorder	F32.A	A depressive presentation causing clinically significant distress or impairment when the documentation does not support a more specific depressive disorder or available information is insufficient.
Generalized anxiety disorder	F41.1	Persistent worry, duration, associated symptoms, functional effects, and relevant exclusions
Panic disorder	F41.0	Recurrent panic attacks, related concern or behavior change, and relevant exclusions
Anxiety disorder, unspecified	F41.9	A clinically significant anxiety presentation when the available record does not support a more specific anxiety disorder.
Obsessive-compulsive disorder	F42.2	Obsessions, compulsions, time burden or impairment, and relevant differential findings
Posttraumatic stress disorder	F43.10	Qualifying exposure, required symptom groups, duration, functional effects, and exclusions
Adjustment disorder with mixed anxiety and depressed mood	F43.23	An identified stressor, timing, mixed anxiety and depressive symptoms, and differential diagnosis
Prolonged grief disorder	F43.81	Required time since the death, persistent grief symptoms, distress or impairment, and cultural context
Bipolar II disorder	F31.81	A history of hypomanic and major depressive episodes and relevant differential findings
Attention deficit hyperactivity disorder, combined presentation	F90.2	Both symptom groups, evidence that several symptoms were present before age 12, impairment in more than one setting, and relevant exclusions.
Borderline personality disorder	F60.3	An enduring and pervasive pattern across settings, functional impairment, developmental course, and relevant differential diagnosis
Alcohol use disorder, mild	F10.10	Mild severity without documented early or sustained remission
Alcohol use disorder, mild, in early or sustained remission	F10.11	Mild severity and documented early or sustained remission
Alcohol use disorder, moderate or severe	F10.20	Moderate or severe presentation without documented early or sustained remission
Alcohol use disorder, moderate or severe, in early or sustained remission	F10.21	Moderate or severe presentation and documented early or sustained remission

Intoxication, withdrawal, alcohol-induced disorders, and other complications may require a different combination code and, where instructed, additional codes.

DSM-5-TR maps posttraumatic stress disorder to F43.10. Do not automatically select an acute or chronic ICD-10-CM PTSD description based only on symptom duration without checking the DSM mapping and current coding instructions.

Important Distinction Between F32.9 and F32.A

F32.9 means major depressive disorder, single episode, unspecified.

F32.A means unspecified depressive disorder.

Use F32.9 if a major depressive disorder, single episode, has been diagnosed, but the documentation is not detailed enough to warrant a more specific code F32. 

Use F32.A when the presentation is included in the depressive disorder group, but excludes more specific depressive diagnoses and when there is inadequate information to make a more specific diagnosis, A is used.

Prolonged Grief Disorder Has Different Age-Based Time Thresholds

For adults, the death must have occurred at least 12 months before the diagnosis.

For children and adolescents, the death must have occurred at least six months before the diagnosis. The grief response must also cause significant distress or impairment and exceed the person’s expected social, cultural, or religious norms.

Why the Diagnosis Name and Code Description May Differ

The DSM-5-TR diagnosis name and the official ICD-10-CM code title may differ even when the code is correct.

This is common with substance use disorders.

DSM-5-TR uses one substance use disorder model with mild, moderate, and severe levels. ICD-10-CM may map a mild disorder to a code whose formal description uses the term “abuse.” Moderate and severe disorders may map to codes whose descriptions use “dependence.”

For alcohol use disorder:

• Mild maps to F10.10.
• Mild in early or sustained remission maps to F10.11.
• Moderate or severe maps to F10.20.
• Moderate or severe in early or sustained remission maps to F10.21.

The official ICD-10-CM description may use “abuse” or “dependence,” while the clinical record should preserve the DSM-5-TR diagnosis and severity language.

Do not change the clinical diagnosis merely to copy the ICD-10-CM title.

Document the DSM-5-TR diagnosis and severity as assessed. Then record the matching ICD-10-CM code. The clinical reasoning should remain clear in the note.

Why Diagnostic Codes Are Also a Compliance Issue

HIPAA covered entities must use adopted code sets when conducting applicable standard healthcare transactions.

HHS identifies ICD-10, CPT, and HCPCS among the standard code sets used for diagnoses, procedures, tests, treatments, equipment, and supplies.

This does not mean that every coding error automatically becomes a separate legal violation. It does mean practices need a controlled process for:

• Loading current code releases
• Applying codes by date of service
• Removing inactive saved codes
• Reviewing code mappings
• Correcting claim edits
• Updating templates and favorites
• Training clinical and billing teams
• Reviewing code changes before their effective dates
• Testing claim edits after EHR code-library updates

A copied problem-list entry or saved favorite should not become the final coding authority.

How to Select and Verify a Mental Health Diagnosis Code

1. Complete the clinical assessment

Start with the patient’s presentation, not with the code list.

Examine medical causes, medical effects of medication, social context, trauma history, reasonable differential diagnoses, onset, symptoms, distress, and functional effects of the presenting concern, and the effects of medication.

Screening tools can support an assessment. They do not replace the qualified professional’s clinical judgment.

2. Identify details that affect code selection

The record may need to establish:

• Single or recurrent episode
• Mild, moderate, or severe presentation
• Current episode type
• Psychotic features
• Partial or full remission
• Substance involved
• Intoxication or withdrawal
• Related mental or physical effects

Do not infer these details from an old claim, prior problem-list entry, or billing preference. These details vary by disorder. Not every diagnosis uses episode, severity, remission, or psychotic-feature distinctions.

3. Start with the Alphabetic Index

The official coding guidelines direct users to first locate the documented diagnosis or reason for the visit in the ICD-10-CM Alphabetic Index. Follow applicable main terms, subterms, and cross-references.

4. Confirm the code in the Tabular List

After locating a possible code, verify it in the Tabular List.

Review:

• Inclusion terms
• Excludes1 notes
• Excludes2 notes
• Code first instructions
• Use additional code instructions
• Required characters
• Parent and child code relationships

Do not assign a code from the Alphabetic Index alone.

The official guidelines state that both the Alphabetic Index and Tabular List are needed because the Index may not provide the full code or all instructions.

5. Use the full code

A three-character category may not be valid when it has been divided into more detailed codes.

ICD-10-CM codes should be submitted with all the necessary characters. Codes are invalid if they are not the full length of the classification character.

6. Use the highest supported specificity

Use the most specific code supported by the current medical record.

Do not add recurrence, severity, remission, psychotic features, or other detail merely to produce a more specific claim.

7. Confirm the date of service

Verify that the selected code is valid for the release applicable to the encounter date. A code that is valid in January 2026 may not be the correct reportable code after an April or October release.

8. Compare the code with the signed record

Before the claim is submitted, confirm that the following items agree:

• Diagnosis name
• ICD-10-CM code
• Episode
• Severity
• Remission status
• Current clinical findings
• Treatment plan
• Reason for the service

Code assignment should be based on the diagnosis documented by the qualified professional legally accountable for establishing it.

When documentation conflicts, the coding team should request clarification rather than make a clinical assumption.

The Outpatient Rule for Uncertain Diagnoses

Do not report an uncertain outpatient diagnosis as confirmed.

Instead, report the condition to the highest degree of certainty known for that encounter. This may be a symptom, sign, abnormal finding, Z code, or another documented reason for the visit.

For example, a clinician may be assessing possible PTSD while gathering more information about trauma exposure, duration, symptoms, and functional effects.

“Rule out PTSD” may be appropriate clinical reasoning. It should not be reported as confirmed PTSD on an outpatient claim.

Do not report diagnoses described as probable, suspected, questionable, rule out, compatible with, consistent with, working, or otherwise uncertain as confirmed in outpatient care.

Once the diagnosis is established, update the:

• Assessment
• Diagnosis code
• Problem list
• Treatment plan
• Billing workflow

This outpatient rule differs from the rule used by certain inpatient facilities, including psychiatric hospitals, where an uncertain diagnosis documented at discharge may be coded as though it existed.

Other Specified vs. Unspecified Diagnoses

Use an “other specified” diagnosis when the presentation causes clinically significant distress or impairment, does not meet full criteria for a named disorder, and the clinician records the specific reason.

An unspecified diagnosis may be used when the presentation causes clinically significant distress or impairment, but the clinician does not state why criteria for a more specific disorder are not met. This may occur when information is limited, such as during an emergency or early assessment.

In ICD-10-CM coding terminology, NEC generally means “other specified,” while NOS generally means “unspecified.” These conventions support code selection but do not replace the DSM-5-TR diagnostic decision.

An unspecified code may be reasonable during:

• An initial assessment
• A crisis encounter
• A visit with limited history
• An encounter before outside records arrive
• A situation in which the patient cannot provide complete information

An unspecified diagnosis is not automatically weak coding. Unsupported specificity is not more accurate.

Review the diagnosis when new information becomes available instead of carrying the unspecified code forward without reassessment.

Can Mental Health Providers Use Symptom Codes?

Yes. A symptom code may be used in outpatient care when no mental health diagnosis has been confirmed.

An early visit may focus on depressed mood, anxiety symptoms, sleep problems, poor attention, unusual behavior, appetite change, or another concern.

The official guidelines allow a symptom to be the first-listed condition when a confirmed diagnosis has not been established. They also recognize that symptom and unspecified codes can be the most accurate choices for a particular encounter.

Report what is known at the end of the visit. Do not force a disorder diagnosis before the evidence supports it. When the diagnosis becomes clear, update the code and related clinical records.

Do not separately report symptoms routinely associated with a confirmed diagnosis unless the classification instructs otherwise. Symptoms that are not routinely associated with the diagnosis may be reported when documented.

Documentation That Supports the Code You Chose

A code is only as defensible as the note behind it. A few documentation practices that support accurate code selection:

• Match severity to what the record actually shows. A severe code should be supported by the symptom burden, intensity, functional effects, and severity criteria that apply to the diagnosis.
• Don’t default to unspecified purely for convenience when the presentation clearly meets a more specific diagnosis.
• Do not report major depressive disorder when the depressive episode is documented as part of bipolar disorder. Select the bipolar disorder code supported by the current episode and record.
• Reassess and update the diagnosis as the clinical picture changes, rather than reusing an old code because it’s already in the chart.
• Document clinically relevant functional effects because they help explain the patient’s treatment need and how symptoms affect daily life.

A Valid Diagnosis Code Does Not Establish Medical Necessity by Itself

The diagnosis code identifies the patient’s condition or reason for the encounter. It does not describe all the work performed or prove that every billed service was needed.

The documentation should also support:

• The service provided
• Current clinical need
• The intervention or evaluation performed
• Required time when the reported service is time-based
• The treatment plan
• The level and frequency of care
• Progress, response, or continued need

ICD-10-CM reports the diagnosis, while CPT or HCPCS reports the service or item. Both should be consistent with the signed record.

HIPAA and Psychotherapy Notes: What’s Actually Protected

Most behavioral health documentation follows the same HIPAA Privacy Rule as any other protected health information. Psychotherapy notes get an added layer of protection, but the definition is narrower than many providers assume.

HIPAA defines psychotherapy notes as notes recorded by a healthcare provider who is a mental health professional that document or analyze a private, group, joint, or family counseling conversation and are maintained separately from the rest of the medical record.

Psychotherapy notes do not include medication prescription and monitoring, counseling session start and stop times, treatment modalities and frequency, clinical test results, diagnosis summaries, functional status, treatment plans, symptoms, prognosis, or progress. These items remain protected health information, but they do not receive the additional protections that apply specifically to psychotherapy notes.

With limited exceptions, disclosing separate psychotherapy notes requires the patient’s authorization. If the practice intends to maintain notes as HIPAA psychotherapy notes, keep those separate from the routine medical record. Diagnosis summaries, treatment plans, symptoms, prognosis, progress, medication information, and session times remain part of the standard record.

State privacy, licensing, consent, and medical-record laws may impose stricter requirements than HIPAA.

What Changed Under 42 CFR Part 2 in 2026?

Organizations subject to 42 CFR Part 2 had to comply with the updated federal confidentiality requirements by February 16, 2026.

Part 2 applies to federally assisted programs that provide substance use disorder diagnosis, treatment, or referral for treatment. Some requirements also apply to healthcare providers, qualified service organizations, HIPAA-covered entities, business associates, lawful holders, and other organizations that receive Part 2 records.

The most important changes are:

Updated Privacy Notices

Part 2 programs must provide an updated patient notice. HIPAA-covered providers and health plans that create or maintain Part 2 records must also address those records in their Notices of Privacy Practices. A combined notice may be used when an organization is subject to both rules.

Consent for Part 2 Records

Patients may provide one consent covering future uses and disclosures of most Part 2 records for treatment, payment, and healthcare operations. SUD counseling notes are excluded from that broad consent and require separate patient consent because the clinician voluntarily maintains them apart from the main SUD treatment and medical record.

Breach Notification Requirements

Part 2 programs must report breaches of unsecured Part 2 records. Depending on the circumstances of the breach, notification may be required for affected individuals, HHS, and the media.

OCR Complaints and Enforcement

Beginning February 16, 2026, anyone can file a Part 2 complaint with OCR. OCR may investigate complaints, conduct compliance reviews, and impose civil monetary penalties when violations occur.

Part 2 does not require all Part 2 records to be stored in a separate system or fully segmented from other health records. However, organizations must apply appropriate consent, access, disclosure, notice, and breach-response controls.

Common Mental Health Coding Mistakes

Using an Outdated Code List

Saved EHR favorites, spreadsheets, and printed cheat sheets may contain codes that have been revised or replaced. Verify codes against the ICD-10-CM release active on the date of service.

Coding an Uncertain Diagnosis as Confirmed

An outpatient claim should reflect what is known at the end of the encounter. Report documented symptoms, findings, or another reason for the visit until the provider establishes the diagnosis.

Using an Incomplete or Unsupported Code

A parent category may not be valid when ICD-10-CM requires additional characters. Use the complete code and only the specificity supported by the current clinical record.

Confusing F32.9 With F32.A

F32.9 represents major depressive disorder, single episode, unspecified. F32.A represents unspecified depressive disorder, so the codes should not be used interchangeably.

Carrying an Old Diagnosis Forward

Chronic diagnoses may remain reportable during ongoing treatment, but episode, severity, remission, and active status should still match the current record.

Assuming the Diagnosis Code Proves Medical Necessity

A valid diagnosis code identifies the condition but does not prove that the billed service was needed. The note must also support the treatment provided, required time, functional impact, and continued clinical need.

Frequently Asked Questions

1. Are DSM 5 TR codes the same as ICD-10-CM codes?

DSM 5 TR does not maintain a separate billing code system. It provides the diagnostic criteria and clinical descriptions used to identify mental disorders. The codes printed beside DSM 5 TR diagnoses are ICD-10-CM codes, which U.S. providers use for claim submission, reporting, and other standard healthcare transactions.

2. Which ICD-10-CM release should providers use in 2026?

Providers should use the ICD-10-CM release active on the patient’s date of service. The October 2025 FY2026 release applies through March 31, 2026. The April 2026 update applies from April 1 through September 30. FY2027 codes apply to services provided on or after October 1, 2026.

3. Can an outpatient provider report a rule-out diagnosis?

No. An outpatient claim should not report a probable, suspected, questionable, or rule-out diagnosis as confirmed. The provider should report the highest degree of certainty reached during the encounter. This may be a documented symptom, clinical finding, Z code, or another reason for the visit until the assessment supports a confirmed diagnosis.

4. What is the difference between F32.9 and F32.A?

F32.9 represents major depressive disorder, single episode, unspecified. It applies when a major depressive episode has been established, but the documentation does not support a more specific F32 code. F32.A represents unspecified depressive disorder and applies when the depressive presentation does not support a more specific diagnosis or available information remains limited.

5. Does 42 CFR Part 2 apply to every mental health practice?

No. Part 2 primarily applies to federally assisted programs that provide substance use disorder diagnosis, treatment, or referral. Some requirements also apply to qualified service organizations, lawful holders, and organizations that receive Part 2 records. A practice should determine its role and record sources before applying Part 2 requirements across its entire behavioral health record system.

Keep Diagnosis, Documentation, and Claims Aligned

Finding the correct diagnosis code is only one part of the workflow. Practices must also keep the code, clinical note, treatment plan, problem list, service details, and claim aligned as the patient’s condition changes.

Vozo helps mental health practices manage documentation and billing information within a connected workflow, reducing the risk of outdated diagnoses, missing clinical details, and mismatches between the signed encounter and submitted claim.

Schedule a demo to see how Vozo can support more consistent mental health documentation, diagnosis coding, and billing workflows.