R40 Somnolence, stupor and coma

Non-billable header with 5 child codes.

Excludes1 (never code together)

• neonatal coma (P91.5)
• somnolence, stupor and coma in diabetes (E08-E13)
• somnolence, stupor and coma in hepatic failure (K72.-)
• somnolence, stupor and coma in hypoglycemia (nondiabetic) (E15)

Applies from R40 Somnolence, stupor and coma

Excludes1 (never code together)

• neonatal coma (P91.5)
• somnolence, stupor and coma in diabetes (E08-E13)
• somnolence, stupor and coma in hepatic failure (K72.-)
• somnolence, stupor and coma in hypoglycemia (nondiabetic) (E15)

Codes under R40

• R40.0 Somnolence
• R40.1 Stupor
• R40.2 Coma
• R40.3 Persistent vegetative state
• R40.4 Transient alteration of awareness

Code annotations containing back-references to R40

Back-references to R40

• Type 1 Excludes: R41.82 Altered mental status, unspecified ("altered level of consciousness (R40.-)")
• Use Additional: T67.0 Heatstroke and sunstroke ("coma and stupor (R40.-)")

Back-references to R40

• Type 1 Excludes: R41.82 Altered mental status, unspecified ("altered level of consciousness (R40.-)")
• Use Additional: T67.0 Heatstroke and sunstroke ("coma and stupor (R40.-)")

Nearby codes

• R40 Somnolence, stupor and coma (this code)
• R40.0 Somnolence
• R40.1 Stupor
• R40.2 Coma
• R40.20 Unspecified coma
• R40.21 Coma scale, eyes open