ICD-10-CM 2027
ICD-10 code for Clouded state
From the official ICD-10-CM alphabetic index entry “Clouded state”. Page updated September 29, 2026.
About coding Clouded state
The ICD-10-CM code for Clouded state is R40.1 (Stupor).
Within R40 (Somnolence, stupor and coma), R40.1 is specifically for stupor. Related codes cover Somnolence (R40.0), coma (R40.2), persistent vegetative state (R40.3) and transient alteration of awareness (R40.4).
Don't report R40.1 together with the conditions in its Excludes1 note: catatonic schizophrenia (F20.2), coma (R40.2-), depressive stupor (F31.-, F32.-, F33.-), dissociative stupor (F44.2) and 1 more.
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
More specific Clouded state codes (official index)
- epileptic
- paroxysmal
Don't confuse with (Excludes1 for R40.1)
Common questions about Clouded state ICD-10 codes
What is the ICD-10 code for Clouded state?
- R40.1 — Stupor.
Is R40.1 billable?
- Yes. R40.1 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can R40.1 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict R40.1 as a principal diagnosis.
Is R40.1 a CC or MCC?
- No. R40.1 is neither a CC nor an MCC under MS-DRG v44.0.