P91.5

Billable

Neonatal coma

HCC Category Mapping

V28HCC 202 — Coma, Brain Compression/Anoxic Damage

0.000

What This Code Means

A state of unconsciousness in a newborn where the infant cannot be aroused and does not respond to external stimuli.

Coding Tips

•This is a serious condition; ensure thorough documentation of the cause and any interventions performed
•Code any underlying etiology separately, such as severe hypoxia, infection, or metabolic crisis

Clinical Significance

Neonatal coma represents the most severe form of altered consciousness in newborns, indicating critical brain dysfunction. This diagnosis carries extremely high morbidity and mortality risk, requiring immediate intensive care and aggressive investigation of underlying causes.

Documentation Requirements

✓Clear documentation of comatose state with inability to arouse
✓Glasgow Coma Scale or neonatal neurological scoring if available
✓Complete lack of response to external stimuli documented
✓Underlying etiology investigated (hypoxia, infection, trauma, metabolic)
✓Neuroimaging findings if obtained
✓EEG findings documenting brain activity patterns
✓Response to therapeutic interventions
✓Prognosis and family discussions documented

Commonly Confused Codes

P91.4 — Neonatal cerebral depression, less severe altered consciousness P91.60 — HIE unspecified, may include coma but more specific R40.20 — Unspecified coma, not neonatal-specific P91.819 — Neonatal encephalopathy unspecified, broader category

Code Hierarchy

└P91Other disturbances of cerebral status of newborn └P91.5Neonatal coma

└P91.5Neonatal coma