R40.21 — Coma scale, eyes open
Is R40.21 billable?
No — R40.21 is a non-billable header code. R40.21 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 20 billable codes beneath R40.21.
Billable codes under this header
- 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
R40.21 at a glance
| Code | R40.21 |
|---|---|
| Description | Coma scale, eyes open |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Excludes1 — never code together — inherited from R40
The conditions below can never be reported together with R40.21 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Code first — inherited from R40.2
The underlying condition below must be sequenced before R40.21. R40.21 describes a manifestation and cannot be the principal or first-listed diagnosis.
Excludes2 — not included here — inherited from Chapter 18
The conditions below are not part of R40.21, but a patient may have both at the same time. When documentation supports it, R40.21 and the excluded code may both be reported.
Excludes2 — not included here — inherited from R40-R46
The conditions below are not part of R40.21, but a patient may have both at the same time. When documentation supports it, R40.21 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 R40.21? (4)
How long has R40.21 existed?
R40.21 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.