F51.01 vs G47.0
F51.01 (Primary insomnia) compared with G47.0 (Insomnia), from the official CMS tabular data. Both may be reported when both conditions are documented (Excludes2).
Can these codes be reported together?
Yes, when both are documented. F51.01 carries an Excludes2 note covering G47.0: “insomnia NOS (G47.0-)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Yes, when both are documented. F51.01 carries an Excludes2 note covering G47.0: “insomnia due to known physiological condition (G47.0-)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Yes, when both are documented. F51.01 carries an Excludes2 note covering G47.0: “organic insomnia (G47.0-)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Yes, when both are documented. F51.01 carries an Excludes2 note covering G47.0: “organic sleep disorders (G47.-)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Yes, when both are documented. G47.0 carries an Excludes2 note covering F51.01: “idiopathic insomnia (F51.01)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Yes, when both are documented. G47.0 carries an Excludes2 note covering F51.01: “insomnia not due to a substance or known physiological condition (F51.0-)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Yes, when both are documented. G47.0 carries an Excludes2 note covering F51.01: “nonorganic insomnia (F51.0-)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Yes, when both are documented. G47.0 carries an Excludes2 note covering F51.01: “primary insomnia (F51.01)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Yes, when both are documented. G47.0 carries an Excludes2 note covering F51.01: “nonorganic sleep disorders (F51.-)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| F51.01Primary insomnia | G47.0Insomnia | |
|---|---|---|
| Billing status | Billable | Non-billable header |
| Classification | F01-F99 — Mental, Behavioral and Neurodevelopmental Disorders (F01-F99) | G00-G99 — Diseases of the Nervous System (G00-G99) |
| Definition | Primary insomnia is a billable ICD-10-CM diagnosis code (F51.01). | Insomnia is a non-billable ICD-10-CM category code (G47.0). |
| Includes | Idiopathic insomnia | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources