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ICD-10 Lookup
Chapter 5
Unspecified mental disorder
F99
Unspecified mental disorder
Codes in this block
1 codes
Billable
usable code
Non-billable
header / grouping code
Risk-adjusting
F99
Mental disorder, not otherwise specified
Billable
Official Guidelines for F99
FY 2026 ›
I.C.5
Chapter-specific guidance
Chapter 5: Mental, Behavioral and Neurodevelopmental disorders
Subsections
I.C.5.a
Pain disorders related to psychological factors
I.C.5.b
Mental and behavioral disorders due to psychoactive substance use
I.C.5.c
Factitious Disorder
I.C.5.d
Dementia