R40 — Somnolence, stupor and coma
Not billable
Is R40 billable?
No — R40 is a non-billable header code. R40 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 60 billable codes beneath R40.
Billable codes under this header
- R40.0Somnolence
- R40.1Stupor
- R40.3Persistent vegetative state
- R40.4Transient alteration of awareness
- R40.20Unspecified coma
- R40.2ANontraumatic coma due to underlying condition
- 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 at a glance
| Code | R40 |
|---|---|
| Description | Somnolence, stupor and coma |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Excludes1 — never code together
The conditions below can never be reported together with R40 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Excludes2 — not included here — inherited from Chapter 18
The conditions below are not part of R40, but a patient may have both at the same time. When documentation supports it, R40 and the excluded code may both be reported.
Excludes2 — not included here — inherited from R40-R46
The conditions below are not part of R40, but a patient may have both at the same time. When documentation supports it, R40 and the excluded code may both be reported.
- symptoms and signs constituting part of a pattern of mental disorder (F01-F99)
What codes fall under R40? (5)
How long has R40 existed?
R40 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.
Which codes are confused with R40?
ICD-10-CM declares these codes mutually exclusive with R40 — exactly one of each pair can be correct for a given encounter.