ICD-10-CM Section · F99-F99

Unspecified mental disorder

1 codes in this section

1
Total Codes
1
Billable
0
Header (Non-Billable)
1
Top-Level Codes

About Section F99

Section F99 (F99-F99) covers unspecified mental disorder. It sits within the Mental, Behavioral and Neurodevelopmental disorders chapter (F01-F99). This section contains 1 ICD-10-CM codes, 1 billable diagnoses you can submit on a claim, and 0 non-billable header codes used to organize the hierarchy.

Codes are organized below by 3-character root. Click the root to see all subcodes underneath it, or click any individual code for full coverage data, payer policies, and linked CPT procedures.

Codes in F99

Grouped by 3-character root code. Click any code for full detail.

F99 Mental disorder, not otherwise specified
0 subcodes
← Previous Section
F90-F98
Behavioral and emotional disorders with onset usually occurring in childhood and adolescence
← Back to Mental, Behavioral and Neurodevelopmental disorders (F01-F99)

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Reviewed by the PayerReady Medical Coding Team

Verified against the CMS 2026 code set on May 31, 2026.

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