Clinician tool
CPT / ICD-10 quick reference
Search the therapy CPT codes, time thresholds, modifiers, and place-of-service codes you bill most, plus the top mental-health ICD-10 diagnoses. A quick memory jog — not a billing authority.
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Common psychotherapy CPT codes
| Code | Service | Time | Notes |
|---|---|---|---|
| 90791 | Psychiatric diagnostic evaluation (no medical services) | — | Intake / initial assessment. Once per episode, per clinician (payer rules vary). |
| 90792 | Psychiatric diagnostic evaluation with medical services | — | Prescriber intake. |
| 90832 | Psychotherapy, individual | 16–37 min | “30-minute” session. |
| 90834 | Psychotherapy, individual | 38–52 min | “45-minute” session — the most common code. |
| 90837 | Psychotherapy, individual | ≥ 53 min | “60-minute” session. Some payers scrutinize frequency. |
| 90846 | Family psychotherapy, without patient | ~50 min | Collateral / family session, client not present. |
| 90847 | Family psychotherapy, with patient | ~50 min | Conjoint / family session, client present. |
| 90853 | Group psychotherapy | per session | Non–family group. One unit per member per session. |
| 90839 | Psychotherapy for crisis, first 60 min | 30–74 min | Life-threatening / complex crisis. Add 90840 for each additional 30 min. |
| 90840 | Crisis add-on, each additional 30 min | +30 min | Use with 90839. |
| 90785 | Interactive complexity (add-on) | — | Add-on to 90791/90832/90834/90837/90853 when communication factors complicate care. |
| 90833 | Psychotherapy, 30 min, with E/M | 16–37 min | Add-on to an E/M service (prescribers). |
| 90836 | Psychotherapy, 45 min, with E/M | 38–52 min | Add-on to an E/M service (prescribers). |
| 90838 | Psychotherapy, 60 min, with E/M | ≥ 53 min | Add-on to an E/M service (prescribers). |
| 96127 | Brief emotional/behavioral assessment | per instrument | Standardized screener scoring (PHQ-9, GAD-7). Up to 4 per visit; payer rules vary. |
| 90882 | Environmental intervention | — | Case-management style code; coverage limited. |
Time rule (individual psychotherapy): bill by the total face-to-face time — 90832 16–37 min · 90834 38–52 min · 9083753+ min. Document start & stop times.
Modifiers
- 95Synchronous telehealth (audio + video). Real-time audio-video. Pair with the telehealth POS.
- 93Synchronous audio-only telehealth. Phone sessions where the payer allows audio-only.
- 25Significant, separately identifiable E/M. Same-day E/M plus another service (prescribers).
- 59Distinct procedural service. Two services not normally reported together but appropriate here.
- HOMaster's-degree level of clinician. Some Medicaid programs require licensure-level modifiers (HO, HN, etc.).
- HJEmployee-assistance program. EAP-funded sessions, per payer.
Place of service (POS)
- 11Office
- 10Telehealth — patient at home
- 02Telehealth — patient not at home
- 12Home
- 53Community mental health center
For telehealth, pair the POS (10 or 02) with modifier 95 (or 93 for audio-only). Payer rules vary.
Top mental-health ICD-10 codes
Depressive
- F32.0/.1/.2Major depressive disorder, single episode — mild / mod / severe
- F33.0/.1/.2MDD, recurrent — mild / mod / severe
- F34.1Persistent depressive disorder (dysthymia)
- F32.ADepression, unspecified
Anxiety & OCD
- F41.1Generalized anxiety disorder
- F41.0Panic disorder
- F40.10Social anxiety disorder
- F40.00Agoraphobia
- F42.2Obsessive-compulsive disorder
Trauma & stress
- F43.10PTSD, unspecified
- F43.23Adjustment disorder with mixed anxiety & depressed mood
- F43.21Adjustment disorder with depressed mood
- F43.0Acute stress reaction
Bipolar & related
- F31.9Bipolar disorder, unspecified
- F31.81Bipolar II disorder
- F30.xManic episode
Neurodevelopmental
- F90.0ADHD, predominantly inattentive
- F90.1ADHD, predominantly hyperactive-impulsive
- F90.2ADHD, combined
- F84.0Autism spectrum disorder
Substance use
- F10.10/.20Alcohol use disorder — mild / mod-severe
- F11.10/.20Opioid use disorder — mild / mod-severe
- F12.10/.20Cannabis use disorder — mild / mod-severe
- F14.10/.20Cocaine use disorder — mild / mod-severe
Other common
- F60.3Borderline personality disorder
- F50.00/.2Anorexia / bulimia nervosa
- F51.01Primary insomnia
- Z63.0Relationship distress with partner (Z-code)
- Z62.820Parent-child relational problem (Z-code)
Verify before you bill. CPT® is owned by the AMA; codes, time thresholds, modifiers, and covered ICD-10 codes change annually and differ by payer and by NH Medicaid policy. Use this as a memory jog, not a billing authority, and confirm specificity (e.g. the correct 4th/5th character) for each diagnosis.