ICD-10-CM category
R40 Somnolence, stupor and coma
R40 is a category, not a billable code. Report one of the 101 complete codes below.
R40.0…
1 code
R40.1…
1 code
R40.2…
97 codes
- R40.20Unspecified coma
- R40.2110Coma scale, eyes open, never, unspecified time
- R40.2111Coma scale, eyes open, never, in the field [EMT or ambulance]
- R40.2112Coma scale, eyes open, never, at arrival to emergency department
- R40.2113Coma scale, eyes open, never, at hospital admission
- R40.2114Coma scale, eyes open, never, 24 hours or more after hospital admission
- R40.2120Coma scale, eyes open, to pain, unspecified time
- R40.2121Coma scale, eyes open, to pain, in the field [EMT or ambulance]
- R40.2122Coma scale, eyes open, to pain, at arrival to emergency department
- R40.2123Coma scale, eyes open, to pain, at hospital admission
- R40.2124Coma scale, eyes open, to pain, 24 hours or more after hospital admission
- R40.2130Coma scale, eyes open, to sound, unspecified time
- R40.2131Coma scale, eyes open, to sound, in the field [EMT or ambulance]
- R40.2132Coma scale, eyes open, to sound, at arrival to emergency department
- R40.2133Coma scale, eyes open, to sound, at hospital admission
- R40.2134Coma scale, eyes open, to sound, 24 hours or more after hospital admission
- R40.2140Coma scale, eyes open, spontaneous, unspecified time
- R40.2141Coma scale, eyes open, spontaneous, in the field [EMT or ambulance]
- R40.2142Coma scale, eyes open, spontaneous, at arrival to emergency department
- R40.2143Coma scale, eyes open, spontaneous, at hospital admission
- R40.2144Coma scale, eyes open, spontaneous, 24 hours or more after hospital admission
- R40.2210Coma scale, best verbal response, none, unspecified time
- R40.2211Coma scale, best verbal response, none, in the field [EMT or ambulance]
- R40.2212Coma scale, best verbal response, none, at arrival to emergency department
- R40.2213Coma scale, best verbal response, none, at hospital admission
- R40.2214Coma scale, best verbal response, none, 24 hours or more after hospital admission
- R40.2220Coma scale, best verbal response, incomprehensible words, unspecified time
- R40.2221Coma scale, best verbal response, incomprehensible words, in the field [EMT or ambulance]
- R40.2222Coma scale, best verbal response, incomprehensible words, at arrival to emergency department
- R40.2223Coma scale, best verbal response, incomprehensible words, at hospital admission
- R40.2224Coma scale, best verbal response, incomprehensible words, 24 hours or more after hospital admission
- R40.2230Coma scale, best verbal response, inappropriate words, unspecified time
- R40.2231Coma scale, best verbal response, inappropriate words, in the field [EMT or ambulance]
- R40.2232Coma scale, best verbal response, inappropriate words, at arrival to emergency department
- R40.2233Coma scale, best verbal response, inappropriate words, at hospital admission
- R40.2234Coma scale, best verbal response, inappropriate words, 24 hours or more after hospital admission
- R40.2240Coma scale, best verbal response, confused conversation, unspecified time
- R40.2241Coma scale, best verbal response, confused conversation, in the field [EMT or ambulance]
- R40.2242Coma scale, best verbal response, confused conversation, at arrival to emergency department
- R40.2243Coma scale, best verbal response, confused conversation, at hospital admission
- R40.2244Coma scale, best verbal response, confused conversation, 24 hours or more after hospital admission
- R40.2250Coma scale, best verbal response, oriented, unspecified time
- R40.2251Coma scale, best verbal response, oriented, in the field [EMT or ambulance]
- R40.2252Coma scale, best verbal response, oriented, at arrival to emergency department
- R40.2253Coma scale, best verbal response, oriented, at hospital admission
- R40.2254Coma scale, best verbal response, oriented, 24 hours or more after hospital admission
- R40.2310Coma scale, best motor response, none, unspecified time
- R40.2311Coma scale, best motor response, none, in the field [EMT or ambulance]
- R40.2312Coma scale, best motor response, none, at arrival to emergency department
- R40.2313Coma scale, best motor response, none, at hospital admission
- R40.2314Coma scale, best motor response, none, 24 hours or more after hospital admission
- R40.2320Coma scale, best motor response, extension, unspecified time
- R40.2321Coma scale, best motor response, extension, in the field [EMT or ambulance]
- R40.2322Coma scale, best motor response, extension, at arrival to emergency department
- R40.2323Coma scale, best motor response, extension, at hospital admission
- R40.2324Coma scale, best motor response, extension, 24 hours or more after hospital admission
- R40.2330Coma scale, best motor response, abnormal flexion, unspecified time
- R40.2331Coma scale, best motor response, abnormal flexion, in the field [EMT or ambulance]
- R40.2332Coma scale, best motor response, abnormal flexion, at arrival to emergency department
- R40.2333Coma scale, best motor response, abnormal flexion, at hospital admission
- R40.2334Coma scale, best motor response, abnormal flexion, 24 hours or more after hospital admission
- R40.2340Coma scale, best motor response, flexion withdrawal, unspecified time
- R40.2341Coma scale, best motor response, flexion withdrawal, in the field [EMT or ambulance]
- R40.2342Coma scale, best motor response, flexion withdrawal, at arrival to emergency department
- R40.2343Coma scale, best motor response, flexion withdrawal, at hospital admission
- R40.2344Coma scale, best motor response, flexion withdrawal, 24 hours or more after hospital admission
- R40.2350Coma scale, best motor response, localizes pain, unspecified time
- R40.2351Coma scale, best motor response, localizes pain, in the field [EMT or ambulance]
- R40.2352Coma scale, best motor response, localizes pain, at arrival to emergency department
- R40.2353Coma scale, best motor response, localizes pain, at hospital admission
- R40.2354Coma scale, best motor response, localizes pain, 24 hours or more after hospital admission
- R40.2360Coma scale, best motor response, obeys commands, unspecified time
- R40.2361Coma scale, best motor response, obeys commands, in the field [EMT or ambulance]
- R40.2362Coma scale, best motor response, obeys commands, at arrival to emergency department
- R40.2363Coma scale, best motor response, obeys commands, at hospital admission
- R40.2364Coma scale, best motor response, obeys commands, 24 hours or more after hospital admission
- R40.2410Glasgow coma scale score 13-15, unspecified time
- R40.2411Glasgow coma scale score 13-15, in the field [EMT or ambulance]
- R40.2412Glasgow coma scale score 13-15, at arrival to emergency department
- R40.2413Glasgow coma scale score 13-15, at hospital admission
- R40.2414Glasgow coma scale score 13-15, 24 hours or more after hospital admission
- R40.2420Glasgow coma scale score 9-12, unspecified time
- R40.2421Glasgow coma scale score 9-12, in the field [EMT or ambulance]
- R40.2422Glasgow coma scale score 9-12, at arrival to emergency department
- R40.2423Glasgow coma scale score 9-12, at hospital admission
- R40.2424Glasgow coma scale score 9-12, 24 hours or more after hospital admission
- R40.2430Glasgow coma scale score 3-8, unspecified time
- R40.2431Glasgow coma scale score 3-8, in the field [EMT or ambulance]
- R40.2432Glasgow coma scale score 3-8, at arrival to emergency department
- R40.2433Glasgow coma scale score 3-8, at hospital admission
- R40.2434Glasgow coma scale score 3-8, 24 hours or more after hospital admission
- R40.2440Other coma, without documented Glasgow coma scale score, or with partial score reported, unspecified time
- R40.2441Other coma, without documented Glasgow coma scale score, or with partial score reported, in the field [EMT or ambulance]
- R40.2442Other coma, without documented Glasgow coma scale score, or with partial score reported, at arrival to emergency department
- R40.2443Other coma, without documented Glasgow coma scale score, or with partial score reported, at hospital admission
- R40.2444Other coma, without documented Glasgow coma scale score, or with partial score reported, 24 hours or more after hospital admission
- R40.2ANontraumatic coma due to underlying condition
R40.3…
1 code
R40.4…
1 code
Outside the US? R40 in the international WHO ICD-10 lists its inclusion and exclusion notes.
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ICD-10-CM is developed by the National Center for Health Statistics (NCHS), Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, and is based on the WHO ICD-10. Codes and titles are reproduced unchanged from the FY2026 code list (effective 1 October 2025). Their use here does not imply endorsement by CDC, HHS or the U.S. Government. Changes effective on or after 1 October 2026 may not be reflected yet; check the current release at cdc.gov or cms.gov before submitting claims.
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