P91.5 vs P91.6
P91.5 (Neonatal coma) compared with P91.6 (Hypoxic ischemic encephalopathy [HIE]), 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. P91.6 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 | P91.6Hypoxic ischemic encephalopathy [HIE] | |
|---|---|---|
| Billing status | Billable | Non-billable header |
| Classification | P00-P96 — Certain Conditions Originating in the Perinatal Period (P00-P96) | P00-P96 — Certain Conditions Originating in the Perinatal Period (P00-P96) |
| Definition | Neonatal coma is a billable ICD-10-CM diagnosis code (P91.5). | Hypoxic ischemic encephalopathy [HIE] is a non-billable ICD-10-CM category code (P91.6). |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources