F06.1 vs R40.1
F06.1 (Catatonic disorder due to known physiological condition) compared with R40.1 (Stupor), 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. F06.1 carries an Excludes1 note covering R40.1: “catatonic stupor (R40.1)”
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. F06.1 carries an Excludes1 note covering R40.1: “stupor NOS (R40.1)”
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
| F06.1Catatonic disorder due to known physiological condition | R40.1Stupor | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | F01-F99 — Mental, Behavioral and Neurodevelopmental Disorders (F01-F99) | R00-R99 — Symptoms, Signs and Abnormal Clinical and Laboratory Findings, Not Elsewhere Classified (R00-R99) |
| Definition | Catatonic disorder due to known physiological condition is a billable ICD-10-CM diagnosis code (F06.1). | Stupor is a billable ICD-10-CM diagnosis code (R40.1). |
| Includes | mental disorders due to endocrine disorder mental disorders due to exogenous hormone mental disorders due to exogenous toxic substance mental disorders due to primary cerebral disease | Catatonic stupor Semicoma |
| Code first | the underlying physiological condition | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources