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ICD-10-CM category

R40: Somnolence, stupor and coma

250 subcodes · 202 billable · Look up any code with the ICD-10 search

Codes under R40 (Somnolence, stupor and coma). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.

CodeDescriptionBillable
R40.0 Somnolence ✓
R40.0 Somnolence ✓
R40.1 Stupor ✓
R40.1 Stupor ✓
R40.2 Coma —
R40.2 Coma —
R40.2A Nontraumatic coma due to underlying condition ✓
R40.2A Nontraumatic coma due to underlying condition ✓
R40.3 Persistent vegetative state ✓
R40.3 Persistent vegetative state ✓
R40.4 Transient alteration of awareness ✓
R40.4 Transient alteration of awareness ✓
R40.20 Unspecified coma ✓
R40.20 Unspecified coma ✓
R40.21 Coma scale, eyes open —
R40.21 Coma scale, eyes open —
R40.22 Coma scale, best verbal response —
R40.22 Coma scale, best verbal response —
R40.23 Coma scale, best motor response —
R40.23 Coma scale, best motor response —
R40.24 Glasgow coma scale, total score —
R40.24 Glasgow coma scale, total score —
R40.211 Coma scale, eyes open, never —
R40.211 Coma scale, eyes open, never —
R40.212 Coma scale, eyes open, to pain —
R40.212 Coma scale, eyes open, to pain —
R40.213 Coma scale, eyes open, to sound —
R40.213 Coma scale, eyes open, to sound —
R40.214 Coma scale, eyes open, spontaneous —
R40.214 Coma scale, eyes open, spontaneous —
R40.221 Coma scale, best verbal response, none —
R40.221 Coma scale, best verbal response, none —
R40.222 Coma scale, best verbal response, incomprehensible words —
R40.222 Coma scale, best verbal response, incomprehensible words —
R40.223 Coma scale, best verbal response, inappropriate words —
R40.223 Coma scale, best verbal response, inappropriate words —
R40.224 Coma scale, best verbal response, confused conversation —
R40.224 Coma scale, best verbal response, confused conversation —
R40.225 Coma scale, best verbal response, oriented —
R40.225 Coma scale, best verbal response, oriented —
R40.231 Coma scale, best motor response, none —
R40.231 Coma scale, best motor response, none —
R40.232 Coma scale, best motor response, extension —
R40.232 Coma scale, best motor response, extension —
R40.233 Coma scale, best motor response, abnormal flexion —
R40.233 Coma scale, best motor response, abnormal flexion —
R40.234 Coma scale, best motor response, flexion withdrawal —
R40.234 Coma scale, best motor response, flexion withdrawal —
R40.235 Coma scale, best motor response, localizes pain —
R40.235 Coma scale, best motor response, localizes pain —
R40.236 Coma scale, best motor response, obeys commands —
R40.236 Coma scale, best motor response, obeys commands —
R40.241 Glasgow coma scale score 13-15 —
R40.241 Glasgow coma scale score 13-15 —
R40.242 Glasgow coma scale score 9-12 —
R40.242 Glasgow coma scale score 9-12 —
R40.243 Glasgow coma scale score 3-8 —
R40.243 Glasgow coma scale score 3-8 —
R40.244 Other coma, without documented Glasgow coma scale score, or with partial score reported —
R40.244 Other coma, without documented Glasgow coma scale score, or with partial score reported —
R40.2110 Coma scale, eyes open, never, unspecified time ✓
R40.2110 Coma scale, eyes open, never, unspecified time ✓
R40.2111 Coma scale, eyes open, never, in the field [EMT or ambulance] ✓
R40.2111 Coma scale, eyes open, never, in the field [EMT or ambulance] ✓
R40.2112 Coma scale, eyes open, never, at arrival to emergency department ✓
R40.2112 Coma scale, eyes open, never, at arrival to emergency department ✓
R40.2113 Coma scale, eyes open, never, at hospital admission ✓
R40.2113 Coma scale, eyes open, never, at hospital admission ✓
R40.2114 Coma scale, eyes open, never, 24 hours or more after hospital admission ✓
R40.2114 Coma scale, eyes open, never, 24 hours or more after hospital admission ✓
R40.2120 Coma scale, eyes open, to pain, unspecified time ✓
R40.2120 Coma scale, eyes open, to pain, unspecified time ✓
R40.2121 Coma scale, eyes open, to pain, in the field [EMT or ambulance] ✓
R40.2121 Coma scale, eyes open, to pain, in the field [EMT or ambulance] ✓
R40.2122 Coma scale, eyes open, to pain, at arrival to emergency department ✓
R40.2122 Coma scale, eyes open, to pain, at arrival to emergency department ✓
R40.2123 Coma scale, eyes open, to pain, at hospital admission ✓
R40.2123 Coma scale, eyes open, to pain, at hospital admission ✓
R40.2124 Coma scale, eyes open, to pain, 24 hours or more after hospital admission ✓
R40.2124 Coma scale, eyes open, to pain, 24 hours or more after hospital admission ✓
R40.2130 Coma scale, eyes open, to sound, unspecified time ✓
R40.2130 Coma scale, eyes open, to sound, unspecified time ✓
R40.2131 Coma scale, eyes open, to sound, in the field [EMT or ambulance] ✓
R40.2131 Coma scale, eyes open, to sound, in the field [EMT or ambulance] ✓
R40.2132 Coma scale, eyes open, to sound, at arrival to emergency department ✓
R40.2132 Coma scale, eyes open, to sound, at arrival to emergency department ✓
R40.2133 Coma scale, eyes open, to sound, at hospital admission ✓
R40.2133 Coma scale, eyes open, to sound, at hospital admission ✓
R40.2134 Coma scale, eyes open, to sound, 24 hours or more after hospital admission ✓
R40.2134 Coma scale, eyes open, to sound, 24 hours or more after hospital admission ✓
R40.2140 Coma scale, eyes open, spontaneous, unspecified time ✓
R40.2140 Coma scale, eyes open, spontaneous, unspecified time ✓
R40.2141 Coma scale, eyes open, spontaneous, in the field [EMT or ambulance] ✓
R40.2141 Coma scale, eyes open, spontaneous, in the field [EMT or ambulance] ✓
R40.2142 Coma scale, eyes open, spontaneous, at arrival to emergency department ✓
R40.2142 Coma scale, eyes open, spontaneous, at arrival to emergency department ✓
R40.2143 Coma scale, eyes open, spontaneous, at hospital admission ✓
R40.2143 Coma scale, eyes open, spontaneous, at hospital admission ✓
R40.2144 Coma scale, eyes open, spontaneous, 24 hours or more after hospital admission ✓
R40.2144 Coma scale, eyes open, spontaneous, 24 hours or more after hospital admission ✓
R40.2210 Coma scale, best verbal response, none, unspecified time ✓
R40.2210 Coma scale, best verbal response, none, unspecified time ✓
R40.2211 Coma scale, best verbal response, none, in the field [EMT or ambulance] ✓
R40.2211 Coma scale, best verbal response, none, in the field [EMT or ambulance] ✓
R40.2212 Coma scale, best verbal response, none, at arrival to emergency department ✓
R40.2212 Coma scale, best verbal response, none, at arrival to emergency department ✓
R40.2213 Coma scale, best verbal response, none, at hospital admission ✓
R40.2213 Coma scale, best verbal response, none, at hospital admission ✓
R40.2214 Coma scale, best verbal response, none, 24 hours or more after hospital admission ✓
R40.2214 Coma scale, best verbal response, none, 24 hours or more after hospital admission ✓
R40.2220 Coma scale, best verbal response, incomprehensible words, unspecified time ✓
R40.2220 Coma scale, best verbal response, incomprehensible words, unspecified time ✓
R40.2221 Coma scale, best verbal response, incomprehensible words, in the field [EMT or ambulance] ✓
R40.2221 Coma scale, best verbal response, incomprehensible words, in the field [EMT or ambulance] ✓
R40.2222 Coma scale, best verbal response, incomprehensible words, at arrival to emergency department ✓
R40.2222 Coma scale, best verbal response, incomprehensible words, at arrival to emergency department ✓
R40.2223 Coma scale, best verbal response, incomprehensible words, at hospital admission ✓
R40.2223 Coma scale, best verbal response, incomprehensible words, at hospital admission ✓
R40.2224 Coma scale, best verbal response, incomprehensible words, 24 hours or more after hospital admission ✓
R40.2224 Coma scale, best verbal response, incomprehensible words, 24 hours or more after hospital admission ✓
R40.2230 Coma scale, best verbal response, inappropriate words, unspecified time ✓
R40.2230 Coma scale, best verbal response, inappropriate words, unspecified time ✓
R40.2231 Coma scale, best verbal response, inappropriate words, in the field [EMT or ambulance] ✓
R40.2231 Coma scale, best verbal response, inappropriate words, in the field [EMT or ambulance] ✓
R40.2232 Coma scale, best verbal response, inappropriate words, at arrival to emergency department ✓
R40.2232 Coma scale, best verbal response, inappropriate words, at arrival to emergency department ✓
R40.2233 Coma scale, best verbal response, inappropriate words, at hospital admission ✓
R40.2233 Coma scale, best verbal response, inappropriate words, at hospital admission ✓
R40.2234 Coma scale, best verbal response, inappropriate words, 24 hours or more after hospital admission ✓
R40.2234 Coma scale, best verbal response, inappropriate words, 24 hours or more after hospital admission ✓
R40.2240 Coma scale, best verbal response, confused conversation, unspecified time ✓
R40.2240 Coma scale, best verbal response, confused conversation, unspecified time ✓
R40.2241 Coma scale, best verbal response, confused conversation, in the field [EMT or ambulance] ✓
R40.2241 Coma scale, best verbal response, confused conversation, in the field [EMT or ambulance] ✓
R40.2242 Coma scale, best verbal response, confused conversation, at arrival to emergency department ✓
R40.2242 Coma scale, best verbal response, confused conversation, at arrival to emergency department ✓
R40.2243 Coma scale, best verbal response, confused conversation, at hospital admission ✓
R40.2243 Coma scale, best verbal response, confused conversation, at hospital admission ✓
R40.2244 Coma scale, best verbal response, confused conversation, 24 hours or more after hospital admission ✓
R40.2244 Coma scale, best verbal response, confused conversation, 24 hours or more after hospital admission ✓
R40.2250 Coma scale, best verbal response, oriented, unspecified time ✓
R40.2250 Coma scale, best verbal response, oriented, unspecified time ✓
R40.2251 Coma scale, best verbal response, oriented, in the field [EMT or ambulance] ✓
R40.2251 Coma scale, best verbal response, oriented, in the field [EMT or ambulance] ✓
R40.2252 Coma scale, best verbal response, oriented, at arrival to emergency department ✓
R40.2252 Coma scale, best verbal response, oriented, at arrival to emergency department ✓
R40.2253 Coma scale, best verbal response, oriented, at hospital admission ✓
R40.2253 Coma scale, best verbal response, oriented, at hospital admission ✓
R40.2254 Coma scale, best verbal response, oriented, 24 hours or more after hospital admission ✓
R40.2254 Coma scale, best verbal response, oriented, 24 hours or more after hospital admission ✓
R40.2310 Coma scale, best motor response, none, unspecified time ✓
R40.2310 Coma scale, best motor response, none, unspecified time ✓
R40.2311 Coma scale, best motor response, none, in the field [EMT or ambulance] ✓
R40.2311 Coma scale, best motor response, none, in the field [EMT or ambulance] ✓
R40.2312 Coma scale, best motor response, none, at arrival to emergency department ✓
R40.2312 Coma scale, best motor response, none, at arrival to emergency department ✓
R40.2313 Coma scale, best motor response, none, at hospital admission ✓
R40.2313 Coma scale, best motor response, none, at hospital admission ✓
R40.2314 Coma scale, best motor response, none, 24 hours or more after hospital admission ✓
R40.2314 Coma scale, best motor response, none, 24 hours or more after hospital admission ✓
R40.2320 Coma scale, best motor response, extension, unspecified time ✓
R40.2320 Coma scale, best motor response, extension, unspecified time ✓
R40.2321 Coma scale, best motor response, extension, in the field [EMT or ambulance] ✓
R40.2321 Coma scale, best motor response, extension, in the field [EMT or ambulance] ✓
R40.2322 Coma scale, best motor response, extension, at arrival to emergency department ✓
R40.2322 Coma scale, best motor response, extension, at arrival to emergency department ✓
R40.2323 Coma scale, best motor response, extension, at hospital admission ✓
R40.2323 Coma scale, best motor response, extension, at hospital admission ✓
R40.2324 Coma scale, best motor response, extension, 24 hours or more after hospital admission ✓
R40.2324 Coma scale, best motor response, extension, 24 hours or more after hospital admission ✓
R40.2330 Coma scale, best motor response, abnormal flexion, unspecified time ✓
R40.2330 Coma scale, best motor response, abnormal flexion, unspecified time ✓
R40.2331 Coma scale, best motor response, abnormal flexion, in the field [EMT or ambulance] ✓
R40.2331 Coma scale, best motor response, abnormal flexion, in the field [EMT or ambulance] ✓
R40.2332 Coma scale, best motor response, abnormal flexion, at arrival to emergency department ✓
R40.2332 Coma scale, best motor response, abnormal flexion, at arrival to emergency department ✓
R40.2333 Coma scale, best motor response, abnormal flexion, at hospital admission ✓
R40.2333 Coma scale, best motor response, abnormal flexion, at hospital admission ✓
R40.2334 Coma scale, best motor response, abnormal flexion, 24 hours or more after hospital admission ✓
R40.2334 Coma scale, best motor response, abnormal flexion, 24 hours or more after hospital admission ✓
R40.2340 Coma scale, best motor response, flexion withdrawal, unspecified time ✓
R40.2340 Coma scale, best motor response, flexion withdrawal, unspecified time ✓
R40.2341 Coma scale, best motor response, flexion withdrawal, in the field [EMT or ambulance] ✓
R40.2341 Coma scale, best motor response, flexion withdrawal, in the field [EMT or ambulance] ✓
R40.2342 Coma scale, best motor response, flexion withdrawal, at arrival to emergency department ✓
R40.2342 Coma scale, best motor response, flexion withdrawal, at arrival to emergency department ✓
R40.2343 Coma scale, best motor response, flexion withdrawal, at hospital admission ✓
R40.2343 Coma scale, best motor response, flexion withdrawal, at hospital admission ✓
R40.2344 Coma scale, best motor response, flexion withdrawal, 24 hours or more after hospital admission ✓
R40.2344 Coma scale, best motor response, flexion withdrawal, 24 hours or more after hospital admission ✓
R40.2350 Coma scale, best motor response, localizes pain, unspecified time ✓
R40.2350 Coma scale, best motor response, localizes pain, unspecified time ✓
R40.2351 Coma scale, best motor response, localizes pain, in the field [EMT or ambulance] ✓
R40.2351 Coma scale, best motor response, localizes pain, in the field [EMT or ambulance] ✓
R40.2352 Coma scale, best motor response, localizes pain, at arrival to emergency department ✓
R40.2352 Coma scale, best motor response, localizes pain, at arrival to emergency department ✓
R40.2353 Coma scale, best motor response, localizes pain, at hospital admission ✓
R40.2353 Coma scale, best motor response, localizes pain, at hospital admission ✓
R40.2354 Coma scale, best motor response, localizes pain, 24 hours or more after hospital admission ✓
R40.2354 Coma scale, best motor response, localizes pain, 24 hours or more after hospital admission ✓
R40.2360 Coma scale, best motor response, obeys commands, unspecified time ✓
R40.2360 Coma scale, best motor response, obeys commands, unspecified time ✓
R40.2361 Coma scale, best motor response, obeys commands, in the field [EMT or ambulance] ✓
R40.2361 Coma scale, best motor response, obeys commands, in the field [EMT or ambulance] ✓
R40.2362 Coma scale, best motor response, obeys commands, at arrival to emergency department ✓
R40.2362 Coma scale, best motor response, obeys commands, at arrival to emergency department ✓
R40.2363 Coma scale, best motor response, obeys commands, at hospital admission ✓
R40.2363 Coma scale, best motor response, obeys commands, at hospital admission ✓
R40.2364 Coma scale, best motor response, obeys commands, 24 hours or more after hospital admission ✓
R40.2364 Coma scale, best motor response, obeys commands, 24 hours or more after hospital admission ✓
R40.2410 Glasgow coma scale score 13-15, unspecified time ✓
R40.2410 Glasgow coma scale score 13-15, unspecified time ✓
R40.2411 Glasgow coma scale score 13-15, in the field [EMT or ambulance] ✓
R40.2411 Glasgow coma scale score 13-15, in the field [EMT or ambulance] ✓
R40.2412 Glasgow coma scale score 13-15, at arrival to emergency department ✓
R40.2412 Glasgow coma scale score 13-15, at arrival to emergency department ✓
R40.2413 Glasgow coma scale score 13-15, at hospital admission ✓
R40.2413 Glasgow coma scale score 13-15, at hospital admission ✓
R40.2414 Glasgow coma scale score 13-15, 24 hours or more after hospital admission ✓
R40.2414 Glasgow coma scale score 13-15, 24 hours or more after hospital admission ✓
R40.2420 Glasgow coma scale score 9-12, unspecified time ✓
R40.2420 Glasgow coma scale score 9-12, unspecified time ✓
R40.2421 Glasgow coma scale score 9-12, in the field [EMT or ambulance] ✓
R40.2421 Glasgow coma scale score 9-12, in the field [EMT or ambulance] ✓
R40.2422 Glasgow coma scale score 9-12, at arrival to emergency department ✓
R40.2422 Glasgow coma scale score 9-12, at arrival to emergency department ✓
R40.2423 Glasgow coma scale score 9-12, at hospital admission ✓
R40.2423 Glasgow coma scale score 9-12, at hospital admission ✓
R40.2424 Glasgow coma scale score 9-12, 24 hours or more after hospital admission ✓
R40.2424 Glasgow coma scale score 9-12, 24 hours or more after hospital admission ✓
R40.2430 Glasgow coma scale score 3-8, unspecified time ✓
R40.2430 Glasgow coma scale score 3-8, unspecified time ✓
R40.2431 Glasgow coma scale score 3-8, in the field [EMT or ambulance] ✓
R40.2431 Glasgow coma scale score 3-8, in the field [EMT or ambulance] ✓
R40.2432 Glasgow coma scale score 3-8, at arrival to emergency department ✓
R40.2432 Glasgow coma scale score 3-8, at arrival to emergency department ✓
R40.2433 Glasgow coma scale score 3-8, at hospital admission ✓
R40.2433 Glasgow coma scale score 3-8, at hospital admission ✓
R40.2434 Glasgow coma scale score 3-8, 24 hours or more after hospital admission ✓
R40.2434 Glasgow coma scale score 3-8, 24 hours or more after hospital admission ✓
R40.2440 Other coma, without documented Glasgow coma scale score, or with partial score reported, unspecified time ✓
R40.2440 Other coma, without documented Glasgow coma scale score, or with partial score reported, unspecified time ✓
R40.2441 Other coma, without documented Glasgow coma scale score, or with partial score reported, in the field [EMT or ambulance] ✓
R40.2441 Other coma, without documented Glasgow coma scale score, or with partial score reported, in the field [EMT or ambulance] ✓
R40.2442 Other coma, without documented Glasgow coma scale score, or with partial score reported, at arrival to emergency department ✓
R40.2442 Other coma, without documented Glasgow coma scale score, or with partial score reported, at arrival to emergency department ✓
R40.2443 Other coma, without documented Glasgow coma scale score, or with partial score reported, at hospital admission ✓
R40.2443 Other coma, without documented Glasgow coma scale score, or with partial score reported, at hospital admission ✓
R40.2444 Other coma, without documented Glasgow coma scale score, or with partial score reported, 24 hours or more after hospital admission ✓
R40.2444 Other coma, without documented Glasgow coma scale score, or with partial score reported, 24 hours or more after hospital admission ✓

Frequently asked questions

What is ICD-10-CM code R40?

R40 is an ICD-10-CM category covering Somnolence, stupor and coma. It contains 250 more specific diagnosis codes, 202 of which are billable.

Is R40 a billable code?

No — R40 is a category header and isn't billable on its own. Code to the highest level of specificity using one of its subcodes (for example R40.0 — Somnolence). 202 of the 250 codes under R40 are billable.

What codes fall under R40?

R40 includes R40.0, R40.0, R40.1, R40.1, R40.2, plus 245 more. See the full list with descriptions and billable status above.

More free billing tools: all ICD-10 categories · ICD-10 search · denial codes · Medicare fees

Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.

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