F15.1 vs F15.9
F15.1 (Other stimulant abuse) compared with F15.9 (Other stimulant use, unspecified), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.
Can these codes be reported together?
No — do not report together. F15.1 carries an Excludes1 note covering F15.9: “other stimulant use, unspecified (F15.9-)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
No — do not report together. F15.9 carries an Excludes1 note covering F15.1: “other stimulant abuse (F15.1-)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
Side by side
| F15.1Other stimulant abuse | F15.9Other stimulant use, unspecified | |
|---|---|---|
| Billing status | Non-billable header | Non-billable header |
| Classification | F01-F99 — Mental, Behavioral and Neurodevelopmental Disorders (F01-F99) | F01-F99 — Mental, Behavioral and Neurodevelopmental Disorders (F01-F99) |
| Definition | Other stimulant abuse is a non-billable ICD-10-CM category code (F15.1). | Other stimulant use, unspecified is a non-billable ICD-10-CM category code (F15.9). |
| Includes | amphetamine-related disorders caffeine | amphetamine-related disorders caffeine |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources