F41.1 is the ICD-10-CM code for generalized anxiety disorder, and it is billable. It is a specific code at the lowest level of its category, so it can go on a claim as written. The mistake to avoid is reaching for F41.9 (“anxiety disorder, unspecified”) when the record actually documents generalized anxiety — that understates what was assessed. Below: the F41 family, the CPT psychotherapy codes F41.1 is billed alongside, and how it maps to DSM-5.
This page is billing and administrative reference. It describes what a code means and whether it can be submitted. It is not clinical advice and does not tell anyone what to diagnose.
| Code | F41.1 |
|---|---|
| Official ICD-10-CM title | Generalized anxiety disorder |
| Billable? | Yes — a specific code, valid for submission |
| Category | F41 — Other anxiety disorders |
| Chapter | F01–F99, Mental, behavioral and neurodevelopmental disorders |
This is the single most common error on anxiety claims. F41.9, “anxiety disorder, unspecified”, is also billable — so nothing bounces immediately, and it can sit in a chart for months. But “unspecified” means the documentation did not support a more specific diagnosis. If the record describes generalized anxiety disorder, F41.1 is the accurate code.
Two practical consequences. Unspecified codes draw attention in utilization review, because a pattern of them suggests documentation that does not match the level of service billed. And some payers apply different medical-necessity rules to unspecified codes. Neither is a reason to over-specify — code what the record supports — but it is a reason not to default to F41.9 out of habit.
| Code | Title | Billable? |
|---|---|---|
| F41.0 | Panic disorder (episodic paroxysmal anxiety) | Yes |
| F41.1 | Generalized anxiety disorder | Yes |
| F41.3 | Other mixed anxiety disorders | Yes |
| F41.8 | Other specified anxiety disorders | Yes |
| F41.9 | Anxiety disorder, unspecified | Yes |
F41 itself is a category header, not a code you can submit. Note that mixed anxiety and depressive disorder sits at F41.8 rather than in F41.3.
The diagnosis code says why; the CPT code says what was done and for how long. In outpatient behavioral health these are the usual pairings:
| CPT | Service | Time |
|---|---|---|
| 90791 | Psychiatric diagnostic evaluation (no medical services) | — |
| 90832 | Individual psychotherapy | 16–37 minutes |
| 90834 | Individual psychotherapy | 38–52 minutes |
| 90837 | Individual psychotherapy | 53 minutes or more |
| 90847 | Family psychotherapy, patient present | 50 minutes typical |
| 90853 | Group psychotherapy | — |
The time bands are the part people get wrong. A 50-minute session is 90834, not 90837 — 90837 starts at 53 minutes. If you are unsure whether a session length supports the code, ask Afia; checking a duration against the time-based rules is one of the things it does.
Therapists assess against DSM-5 criteria and bill ICD-10-CM codes, which is a recurring source of confusion. There is no separate “DSM code” to convert: DSM-5-TR prints the ICD-10-CM code beside each disorder. Generalized anxiety disorder carries F41.1 in both.
Afia is free and answers these by voice or chat — find a code from a condition name, confirm whether a code is billable, validate a whole list at once, or check a session length against a CPT time band. No sign-up.
Yes. F41.1 is a billable, specific ICD-10-CM code — it sits at the lowest level of its category, so it can be submitted on a claim as-is.
F41.1. The official ICD-10-CM title is “Generalized anxiety disorder”.
F41.1 is generalized anxiety disorder specifically. F41.9 is “Anxiety disorder, unspecified” — used when the documentation does not support a more specific anxiety diagnosis. Both are billable, but if the record documents generalized anxiety disorder, F41.1 is the accurate code and F41.9 understates what was assessed.
In outpatient behavioral health, F41.1 is commonly paired with 90791 for the diagnostic evaluation, then 90832, 90834 or 90837 for individual psychotherapy depending on session length, and 90847 for family therapy with the patient present.
Yes. DSM-5-TR lists ICD-10-CM codes alongside its criteria, and generalized anxiety disorder carries F41.1. Clinicians assess against DSM criteria and bill the ICD-10-CM code.
Check a code with Afia — freeCodes on this page were verified against the CMS ICD-10-CM code sets for FY2026 and FY2027 (FY2027 effective 1 October 2026). Last reviewed 19 September 2026. Verify against the current official code set before submitting.