P91.5 vs R40.2440
P91.5 (Neonatal coma) compared with R40.2440 (Other coma, without documented Glasgow coma scale score, or with partial score reported, unspecified time), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.
Can these codes be reported together?
No — do not report together. R40.2440 carries an Excludes1 note covering P91.5: “neonatal coma (P91.5)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
Side by side
| P91.5Neonatal coma | R40.2440Other coma, without documented Glasgow coma scale score, or with partial score reported, unspecified time | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | P00-P96 — Certain Conditions Originating in the Perinatal Period (P00-P96) | R00-R99 — Symptoms, Signs and Abnormal Clinical and Laboratory Findings, Not Elsewhere Classified (R00-R99) |
| Definition | Neonatal coma is a billable ICD-10-CM diagnosis code (P91.5). | Other coma, without documented Glasgow coma scale score, or with partial score reported, unspecified time is a billable ICD-10-CM diagnosis code (R40.2440). |
| 7th character | — | The following appropriate 7th character is to be added to subcategory R40.24-: |
| Code first | — | any associated: fracture of skull (S02.-) |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources