F99 — Unspecified mental disorder
ICD-10-CM codes F99 cover unspecified mental disorder, within mental, behavioral and neurodevelopmental disorders. The block holds 1 code across 1 category, of which 1 are billable and 0 are header codes that cannot be submitted on a claim.
What else to watch in F99
- 1 codes are named in Medicare coverage policies. An LCD or NCD lists them as supporting medical necessity, or explicitly as not supporting it. Which applies depends on the MAC for your state.