P91.821 (Neonatal cerebral infarction, right side of brain) compared with P91.822 (Neonatal cerebral infarction, left side of brain), from the official CMS tabular data. P91.821 and P91.822 code the same condition on opposite sides. MedCoder-derived
Same condition; these differ only in which side is documented.
These codes share a category and title and differ only in the side affected. The documentation decides which applies, and a bilateral code is reported only where the code set provides one.
Source: ICD-10-CM tabular list (laterality variant derived from the code title)
Same condition, opposite side. P91.821 and P91.822 name the same condition on opposite sides of the body.
Same category and title, differing only in which side is affected — the documentation decides which one applies, and a bilateral code is reported only where the code set provides one.
| P91.821Neonatal cerebral infarction, right side of brain | P91.822Neonatal cerebral infarction, left side of brain | |
|---|---|---|
| Billing status | Billable | Billable |
| 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 cerebral infarction, right side of brain is a billable ICD-10-CM diagnosis code (P91.821). | Neonatal cerebral infarction, left side of brain is a billable ICD-10-CM diagnosis code (P91.822). |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources