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