| R40.20 | Unspecified coma |
| R40.2110 | Coma scale, eyes open, never, unspecified time |
| 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 |
| R40.2113 | Coma scale, eyes open, never, at 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 |
| R40.2121 | 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 |
| R40.2123 | Coma scale, eyes open, to pain, at hospital admission |
| R40.2124 | Coma scale, eyes open, to pain, 24 hours or more after hospital admission |
| R40.2210 | Coma scale, best verbal response, none, unspecified time |
| 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 |
| R40.2213 | Coma scale, best verbal response, none, at hospital admission |
| R40.2214 | Coma scale, best verbal response, none, 24 hours or more after hospital admission |
| R40.2220 | Coma scale, best verbal response, incomprehensible words, unspecified time |
| R40.2221 | Coma scale, best verbal response, incomprehensible words, in the field [EMT or ambulance] |
| R40.2222 | Coma scale, best verbal response, incomprehensible words, at arrival to emergency department |
| R40.2223 | Coma scale, best verbal response, incomprehensible words, at hospital admission |
| R40.2224 | Coma scale, best verbal response, incomprehensible words, 24 hours or more after hospital admission |
| R40.2310 | Coma scale, best motor response, none, unspecified time |
| R40.2311 | Coma scale, best motor response, none, in the field [EMT or ambulance] |
| R40.2312 | Coma scale, best motor response, none, at arrival to emergency department |
| 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 |
| R40.2320 | Coma scale, best motor response, extension, unspecified time |
| 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 |
| R40.2323 | Coma scale, best motor response, extension, at hospital admission |
| R40.2324 | Coma scale, best motor response, extension, 24 hours or more after hospital admission |
| R40.2340 | Coma scale, best motor response, flexion withdrawal, unspecified time |
| R40.2341 | Coma scale, best motor response, flexion withdrawal, in the field [EMT or ambulance] |
| R40.2342 | Coma scale, best motor response, flexion withdrawal, at arrival to emergency department |
| R40.2343 | Coma scale, best motor response, flexion withdrawal, at hospital admission |
| R40.2344 | Coma scale, best motor response, flexion withdrawal, 24 hours or more after hospital admission |
| R40.2A | Nontraumatic coma due to underlying condition |
