ICD-10 F43.20
Billable / SpecificAdjustment disorder, unspecified
About ICD-10-CM F43.20
ICD-10-CM code F43.20 represents Adjustment disorder, unspecified. This is a billable/specific code in the Mental, Behavioral, and Neurodevelopmental chapter (block F43). The 2026 edition of ICD-10-CM F43.20 became effective on October 1, 2025.
Medicare LCD Coverage for F43.20
Local Coverage Determinations (LCDs) from CMS MACs that list F43.20 as a covered diagnosis.
Showing top 10 of 138 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing F43.20.
5 Medicare
CPT Codes Commonly Billed with F43.20
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
- 90834 Psychotherapy 45 min — GAD, anxiety, MDD, recurrent depression, PTSD, adjustment disorder, BPD, OCD, bipolar, ADHD, autism, anorexia, bulimia Psychiatry
- 90837 Psychotherapy 60 min — same as 90834 plus substance use disorders, severe depression Psychiatry
- 90832 Psychotherapy 30 min — mild-moderate anxiety, depression, adjustment disorder, emotional distress, relationship problems Psychiatry
- 90847 Family psychotherapy with patient — anxiety, depression, adjustment, relationship problems, substance use, eating disorder, conduct disorder, separation anxiety Psychiatry
Convert F43.20 to ICD-9-CM
Per CMS General Equivalence Mappings (GEMs), useful for legacy data review and historical claim analysis.
| ICD-10 | ICD-9 | Mapping Flags |
|---|---|---|
| F43.20 | 3099 | 10000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To F43.20
Other codes in section F40-F48 (Anxiety, dissociative, stress-related, somatoform and other nonpsychotic mental disorders).
ICD-10 F43.20, Billing FAQ
Is ICD-10 code F43.20 billable? +
Yes, F43.20 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
What CPT codes are commonly billed with F43.20? +
Procedures frequently paired with F43.20 include: 90834, 90837, 90832, 90847.
What ICD-9 codes does F43.20 map to? +
Per CMS GEMs, F43.20 maps to ICD-9 codes: 3099. Useful for legacy data review and historical claim analysis.
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on June 1, 2026.
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