ICD-10 · PDGM grouping
R40 Somnolence, stupor and coma
All 101 codes in the R40 family, with the PDGM clinical group, comorbidity subgroup and primary-position rule CMS assigns, read from the CMS grouper crosswalk v07.2.26 and the CDC FY2027 code file.
ICD-10-CM FY2027 · CMS grouper v07.2.26
Codes in family
101
Can lead a claim
0
Cannot lead a claim
101
What CMS assigns to R40
None of the 101 codes is assigned a clinical group. None of the 101 is assigned a comorbidity subgroup. None can lead a claim. CMS attaches a code-first note to 97 of the 101.
Code first
CMS grouper convention 157, on R40.20, R40.2110, R40.2111, R40.2112, R40.2113, R40.2114, R40.2120, R40.2121, R40.2122, R40.2123, R40.2124, R40.2130, R40.2131, R40.2132, R40.2133, R40.2134, R40.2140, R40.2141, R40.2142, R40.2143, R40.2144, R40.2210, R40.2211, R40.2212, R40.2213, R40.2214, R40.2220, R40.2221, R40.2222, R40.2223, R40.2224, R40.2230, R40.2231, R40.2232, R40.2233, R40.2234, R40.2240, R40.2241, R40.2242, R40.2243, R40.2244, R40.2250, R40.2251, R40.2252, R40.2253, R40.2254, R40.2310, R40.2311, R40.2312, R40.2313, R40.2314, R40.2320, R40.2321, R40.2322, R40.2323, R40.2324, R40.2330, R40.2331, R40.2332, R40.2333, R40.2334, R40.2340, R40.2341, R40.2342, R40.2343, R40.2344, R40.2350, R40.2351, R40.2352, R40.2353, R40.2354, R40.2360, R40.2361, R40.2362, R40.2363, R40.2364, R40.2410, R40.2411, R40.2412, R40.2413, R40.2414, R40.2420, R40.2421, R40.2422, R40.2423, R40.2424, R40.2430, R40.2431, R40.2432, R40.2433, R40.2434, R40.2440, R40.2441, R40.2442, R40.2443, R40.2444, R40.2A. Code first:
- any associated:
- fracture of skull (S02.-)
- intracranial injury (S06.-)
Every code in R40
Descriptions are CDC’s FY2027 wording; where CMS’s grouper abbreviates one, its form is shown beneath.
| Code | Description | Primary position | Clinical group | Comorbidity subgroup |
|---|---|---|---|---|
| R40.0 | Somnolence | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| R40.1 | Stupor | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| R40.2 Coma | ||||
| R40.20 | Unspecified coma | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| R40.21 Coma scale, eyes open | ||||
| R40.211 Coma scale, eyes open, never | ||||
| R40.2110 | Coma scale, eyes open, never, unspecified time | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2111 | Coma scale, eyes open, never, in the field [EMT or ambulance]CMS: Coma scale, eyes open, never, in the field | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2112 | Coma scale, eyes open, never, at arrival to emergency departmentCMS: Coma scale, eyes open, never, EMR | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2113 | Coma scale, eyes open, never, at hospital admission | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2114 | Coma scale, eyes open, never, 24 hours or more after hospital admissionCMS: Coma scale, eyes open, never, 24+hrs | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.212 Coma scale, eyes open, to pain | ||||
| R40.2120 | Coma scale, eyes open, to pain, unspecified time | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2121 | Coma scale, eyes open, to pain, in the field [EMT or ambulance]CMS: Coma scale, eyes open, to pain, in the field | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2122 | Coma scale, eyes open, to pain, at arrival to emergency departmentCMS: Coma scale, eyes open, to pain, EMR | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2123 | Coma scale, eyes open, to pain, at hospital admission | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2124 | Coma scale, eyes open, to pain, 24 hours or more after hospital admissionCMS: Coma scale, eyes open, to pain, 24+hrs | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.213 Coma scale, eyes open, to sound | ||||
| R40.2130 | Coma scale, eyes open, to sound, unspecified time | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2131 | Coma scale, eyes open, to sound, in the field [EMT or ambulance]CMS: Coma scale, eyes open, to sound, in the field | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2132 | Coma scale, eyes open, to sound, at arrival to emergency departmentCMS: Coma scale, eyes open, to sound, EMR | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2133 | Coma scale, eyes open, to sound, at hospital admission | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2134 | Coma scale, eyes open, to sound, 24 hours or more after hospital admissionCMS: Coma scale, eyes open, to sound, 24+hrs | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.214 Coma scale, eyes open, spontaneous | ||||
| R40.2140 | Coma scale, eyes open, spontaneous, unspecified time | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2141 | Coma scale, eyes open, spontaneous, in the field [EMT or ambulance]CMS: Coma scale, eyes open, spontaneous, in the field | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2142 | Coma scale, eyes open, spontaneous, at arrival to emergency departmentCMS: Coma scale, eyes open, spontaneous, EMR | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2143 | Coma scale, eyes open, spontaneous, at hospital admission | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2144 | Coma scale, eyes open, spontaneous, 24 hours or more after hospital admissionCMS: Coma scale, eyes open, spontaneous, 24+hrs | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.22 Coma scale, best verbal response | ||||
| R40.221 Coma scale, best verbal response, none | ||||
| R40.2210 | Coma scale, best verbal response, none, unspecified time | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2211 | Coma scale, best verbal response, none, in the field [EMT or ambulance]CMS: Coma scale, best verbal response, none, in the field | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2212 | Coma scale, best verbal response, none, at arrival to emergency departmentCMS: Coma scale, best verbal response, none, EMR | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2213 | Coma scale, best verbal response, none, at hospital admissionCMS: Coma scale, best verbal response, none, admit | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2214 | Coma scale, best verbal response, none, 24 hours or more after hospital admissionCMS: Coma scale, best verbal response, none, 24+hrs | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.222 Coma scale, best verbal response, incomprehensible words | ||||
| R40.2220 | Coma scale, best verbal response, incomprehensible words, unspecified timeCMS: Coma scale, best verb, incomprehensible words, unsp time | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2221 | Coma scale, best verbal response, incomprehensible words, in the field [EMT or ambulance]CMS: Coma scale, best verb, incomprehensible words, in the field | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2222 | Coma scale, best verbal response, incomprehensible words, at arrival to emergency departmentCMS: Coma scale, best verb, incomprehensible words, EMR | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2223 | Coma scale, best verbal response, incomprehensible words, at hospital admissionCMS: Coma scale, best verb, incomprehensible words, admit | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2224 | Coma scale, best verbal response, incomprehensible words, 24 hours or more after hospital admissionCMS: Coma scale, best verb, incomprehensible words, 24+hrs | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.223 Coma scale, best verbal response, inappropriate words | ||||
| R40.2230 | Coma scale, best verbal response, inappropriate words, unspecified timeCMS: Coma scale, best verb, inappropriate words, unsp time | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2231 | Coma scale, best verbal response, inappropriate words, in the field [EMT or ambulance]CMS: Coma scale, best verb, inappropriate words, in the field | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2232 | Coma scale, best verbal response, inappropriate words, at arrival to emergency departmentCMS: Coma scale, best verbal response, inappropriate words, EMR | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2233 | Coma scale, best verbal response, inappropriate words, at hospital admissionCMS: Coma scale, best verbal response, inappropriate words, admit | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2234 | Coma scale, best verbal response, inappropriate words, 24 hours or more after hospital admissionCMS: Coma scale, best verb, inappropriate words, 24+hrs | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.224 Coma scale, best verbal response, confused conversation | ||||
| R40.2240 | Coma scale, best verbal response, confused conversation, unspecified timeCMS: Coma scale, best verb, confused conversation, unsp time | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2241 | Coma scale, best verbal response, confused conversation, in the field [EMT or ambulance]CMS: Coma scale, best verb, confused conversation, in the field | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2242 | Coma scale, best verbal response, confused conversation, at arrival to emergency departmentCMS: Coma scale, best verbal response, confused conversation, EMR | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2243 | Coma scale, best verbal response, confused conversation, at hospital admissionCMS: Coma scale, best verb, confused conversation, admit | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2244 | Coma scale, best verbal response, confused conversation, 24 hours or more after hospital admissionCMS: Coma scale, best verb, confused conversation, 24+hrs | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.225 Coma scale, best verbal response, oriented | ||||
| R40.2250 | Coma scale, best verbal response, oriented, unspecified time | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2251 | Coma scale, best verbal response, oriented, in the field [EMT or ambulance]CMS: Coma scale, best verbal response, oriented, in the field | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2252 | Coma scale, best verbal response, oriented, at arrival to emergency departmentCMS: Coma scale, best verbal response, oriented, EMR | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2253 | Coma scale, best verbal response, oriented, at hospital admissionCMS: Coma scale, best verbal response, oriented, admit | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2254 | Coma scale, best verbal response, oriented, 24 hours or more after hospital admissionCMS: Coma scale, best verbal response, oriented, 24+hrs | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.23 Coma scale, best motor response | ||||
| R40.231 Coma scale, best motor response, none | ||||
| R40.2310 | Coma scale, best motor response, none, unspecified time | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2311 | Coma scale, best motor response, none, in the field [EMT or ambulance]CMS: Coma scale, best motor response, none, in the field | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2312 | Coma scale, best motor response, none, at arrival to emergency departmentCMS: Coma scale, best motor response, none, EMR | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2313 | Coma scale, best motor response, none, at hospital admission | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2314 | Coma scale, best motor response, none, 24 hours or more after hospital admissionCMS: Coma scale, best motor response, none, 24+hrs | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.232 Coma scale, best motor response, extension | ||||
| R40.2320 | Coma scale, best motor response, extension, unspecified time | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2321 | Coma scale, best motor response, extension, in the field [EMT or ambulance]CMS: Coma scale, best motor response, extension, in the field | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2322 | Coma scale, best motor response, extension, at arrival to emergency departmentCMS: Coma scale, best motor response, extension, EMR | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2323 | Coma scale, best motor response, extension, at hospital admissionCMS: Coma scale, best motor response, extension, admit | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2324 | Coma scale, best motor response, extension, 24 hours or more after hospital admissionCMS: Coma scale, best motor response, extension, 24+hrs | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.233 Coma scale, best motor response, abnormal flexion | ||||
| R40.2330 | Coma scale, best motor response, abnormal flexion, unspecified timeCMS: Coma scale, best motor, abnormal flexion, unspecified time | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2331 | Coma scale, best motor response, abnormal flexion, in the field [EMT or ambulance]CMS: Coma scale, best motor, abnormal flexion, in the field | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2332 | Coma scale, best motor response, abnormal flexion, at arrival to emergency departmentCMS: Coma scale, best motor response, abnormal flexion, EMR | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2333 | Coma scale, best motor response, abnormal flexion, at hospital admissionCMS: Coma scale, best motor response, abnormal flexion, admit | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2334 | Coma scale, best motor response, abnormal flexion, 24 hours or more after hospital admissionCMS: Coma scale, best motor response, abnormal flexion, 24+hrs | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.234 Coma scale, best motor response, flexion withdrawal | ||||
| R40.2340 | Coma scale, best motor response, flexion withdrawal, unspecified timeCMS: Coma scale, best motor, flexion withdrawal, unsp time | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2341 | Coma scale, best motor response, flexion withdrawal, in the field [EMT or ambulance]CMS: Coma scale, best motor, flexion withdrawal, in the field | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2342 | Coma scale, best motor response, flexion withdrawal, at arrival to emergency departmentCMS: Coma scale, best motor response, flexion withdrawal, EMR | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2343 | Coma scale, best motor response, flexion withdrawal, at hospital admissionCMS: Coma scale, best motor response, flexion withdrawal, admit | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2344 | Coma scale, best motor response, flexion withdrawal, 24 hours or more after hospital admissionCMS: Coma scale, best motor response, flexion withdrawal, 24+hrs | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.235 Coma scale, best motor response, localizes pain | ||||
| R40.2350 | Coma scale, best motor response, localizes pain, unspecified timeCMS: Coma scale, best motor response, localizes pain, unsp time | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2351 | Coma scale, best motor response, localizes pain, in the field [EMT or ambulance]CMS: Coma scale, best motor, localizes pain, in the field | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2352 | Coma scale, best motor response, localizes pain, at arrival to emergency departmentCMS: Coma scale, best motor response, localizes pain, EMR | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2353 | Coma scale, best motor response, localizes pain, at hospital admissionCMS: Coma scale, best motor response, localizes pain, admit | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2354 | Coma scale, best motor response, localizes pain, 24 hours or more after hospital admissionCMS: Coma scale, best motor response, localizes pain, 24+hrs | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.236 Coma scale, best motor response, obeys commands | ||||
| R40.2360 | Coma scale, best motor response, obeys commands, unspecified timeCMS: Coma scale, best motor response, obeys commands, unsp time | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2361 | Coma scale, best motor response, obeys commands, in the field [EMT or ambulance]CMS: Coma scale, best motor, obeys commands, in the field | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2362 | Coma scale, best motor response, obeys commands, at arrival to emergency departmentCMS: Coma scale, best motor response, obeys commands, EMR | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2363 | Coma scale, best motor response, obeys commands, at hospital admissionCMS: Coma scale, best motor response, obeys commands, admit | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2364 | Coma scale, best motor response, obeys commands, 24 hours or more after hospital admissionCMS: Coma scale, best motor response, obeys commands, 24+hrs | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.24 Glasgow coma scale, total score | ||||
| R40.241 Glasgow coma scale score 13-15 | ||||
| R40.2410 | Glasgow coma scale score 13-15, unspecified time | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2411 | Glasgow coma scale score 13-15, in the field [EMT or ambulance]CMS: Glasgow coma scale score 13-15, in the field | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2412 | Glasgow coma scale score 13-15, at arrival to emergency departmentCMS: Glasgow coma scale score 13-15, EMR | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2413 | Glasgow coma scale score 13-15, at hospital admission | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2414 | Glasgow coma scale score 13-15, 24 hours or more after hospital admissionCMS: Glasgow coma scale score 13-15, 24+hrs | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.242 Glasgow coma scale score 9-12 | ||||
| R40.2420 | Glasgow coma scale score 9-12, unspecified time | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2421 | Glasgow coma scale score 9-12, in the field [EMT or ambulance]CMS: Glasgow coma scale score 9-12, in the field | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2422 | Glasgow coma scale score 9-12, at arrival to emergency departmentCMS: Glasgow coma scale score 9-12, EMR | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2423 | Glasgow coma scale score 9-12, at hospital admission | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2424 | Glasgow coma scale score 9-12, 24 hours or more after hospital admissionCMS: Glasgow coma scale score 9-12, 24+hrs | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.243 Glasgow coma scale score 3-8 | ||||
| R40.2430 | Glasgow coma scale score 3-8, unspecified time | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2431 | Glasgow coma scale score 3-8, in the field [EMT or ambulance]CMS: Glasgow coma scale score 3-8, in the field | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2432 | Glasgow coma scale score 3-8, at arrival to emergency departmentCMS: Glasgow coma scale score 3-8, EMR | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2433 | Glasgow coma scale score 3-8, at hospital admission | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2434 | Glasgow coma scale score 3-8, 24 hours or more after hospital admissionCMS: Glasgow coma scale score 3-8, 24+hrs | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.244 Other coma, without documented Glasgow coma scale score, or with partial score reported | ||||
| R40.2440 | Other coma, without documented Glasgow coma scale score, or with partial score reported, unspecified timeCMS: Other coma, without Glasgow, or w/part score, unsp time | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2441 | Other coma, without documented Glasgow coma scale score, or with partial score reported, in the field [EMT or ambulance]CMS: Other coma, without Glasgow, or w/part score, in the field | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2442 | Other coma, without documented Glasgow coma scale score, or with partial score reported, at arrival to emergency departmentCMS: Other coma, without documented Glasgow, or w/part score, EMR | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2443 | Other coma, without documented Glasgow coma scale score, or with partial score reported, at hospital admissionCMS: Other coma, without Glasgow, or w/part score, admit | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2444 | Other coma, without documented Glasgow coma scale score, or with partial score reported, 24 hours or more after hospital admissionCMS: Other coma, without Glasgow, or w/part score, 24+hrs | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.2A | Nontraumatic coma due to underlying condition | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| R40.3 | Persistent vegetative state | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| R40.4 | Transient alteration of awareness | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
Sources: CMS HH PPS Grouper Software v07.2.26, effective 2026-10-01, for the clinical group, comorbidity subgroup, code-first conventions and primary-position flags; CDC NCHS ICD-10-CM FY2027 code descriptions for the family title and code wording. This is the crosswalk Medicare runs a claim through. Grouping also depends on admission source, timing, the OASIS functional items and the rest of the diagnosis list.
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