ICD-10 · PDGM grouping
P91 Other disturbances of cerebral status of newborn
All 18 codes in the P91 family, with the PDGM clinical group, comorbidity subgroup and primary-position rule CMS assigns, read from the CMS grouper crosswalk v07.2.26 and the CDC FY2027 code file.
Codes in family
18
Can lead a claim
16
Cannot lead a claim
2
What CMS assigns to P91
16 of the 18 codes group to MMTA - Other (12) and Neuro Rehabilitation (4); 2 are assigned no clinical group. None of the 18 is assigned a comorbidity subgroup. 16 of the 18 can lead a claim. CMS attaches a code-first note to 1 of the 18.
Code first
CMS grouper convention 149, on P91.811. Code first:
- congenital cirrhosis (of liver) (P78.81)
- intracranial nontraumatic hemorrhage of newborn (P52.-)
- kernicterus (P57.-)
- underlying condition, if known, such as:
Every code in P91
Descriptions are CDC’s FY2027 wording; where CMS’s grouper abbreviates one, its form is shown beneath.
| Code | Description | Primary position | Clinical group | Comorbidity subgroup |
|---|---|---|---|---|
| P91.0 | Neonatal cerebral ischemia | Can lead a claim | A | None |
| P91.1 | Acquired periventricular cysts of newborn | Can lead a claim | A | None |
| P91.2 | Neonatal cerebral leukomalacia | Can lead a claim | A | None |
| P91.3 | Neonatal cerebral irritability | Can lead a claim | A | None |
| P91.4 | Neonatal cerebral depression | Can lead a claim | A | None |
| P91.5 | Neonatal coma | Can lead a claim | A | None |
| P91.6 Hypoxic ischemic encephalopathy [HIE] | ||||
| P91.60 | Hypoxic ischemic encephalopathy [HIE], unspecified | Can lead a claim | A | None |
| P91.61 | Mild hypoxic ischemic encephalopathy [HIE] | Can lead a claim | A | None |
| P91.62 | Moderate hypoxic ischemic encephalopathy [HIE] | Can lead a claim | A | None |
| P91.63 | Severe hypoxic ischemic encephalopathy [HIE] | Can lead a claim | A | None |
| P91.8 Other specified disturbances of cerebral status of newborn | ||||
| P91.81 Neonatal encephalopathy | ||||
| P91.811 | Neonatal encephalopathy in diseases classified elsewhere | Cannot lead a claimManifestation code is not reportable as principal diagnosis | None | None |
| P91.819 | Neonatal encephalopathy, unspecified | Can lead a claim | A | None |
| P91.82 Neonatal cerebral infarction | ||||
| P91.821 | Neonatal cerebral infarction, right side of brain | Can lead a claim | B | None |
| P91.822 | Neonatal cerebral infarction, left side of brain | Can lead a claim | B | None |
| P91.823 | Neonatal cerebral infarction, bilateral | Can lead a claim | B | None |
| P91.829 | Neonatal cerebral infarction, unspecified side | Can lead a claim | B | None |
| P91.88 | Other specified disturbances of cerebral status of newborn | Can lead a claim | A | None |
| P91.9 | Disturbance of cerebral status of newborn, unspecified | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
Sources: CMS HH PPS Grouper Software v07.2.26, effective 2026-10-01, for the clinical group, comorbidity subgroup, code-first conventions and primary-position flags; CDC NCHS ICD-10-CM FY2027 code descriptions for the family title and code wording. This is the crosswalk Medicare runs a claim through. Grouping also depends on admission source, timing, the OASIS functional items and the rest of the diagnosis list.
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