P91.6Hypoxic ischemic encephalopathy [HIE]

P91.6 is the ICD-10-CM diagnosis code for hypoxic ischemic encephalopathy [HIE]. It belongs to category P91 (other disturbances of cerebral status of newborn), block P90-P96 (other disorders originating in the perinatal period) and chapter 16 (certain conditions originating in the perinatal period). It is a header code, so it can't be reported by itself; one of its 4 subcodes must be used instead.

Within P91 (other disturbances of cerebral status of newborn), P91.6 is specifically for hypoxic ischemic encephalopathy [HIE]. Related codes cover neonatal cerebral ischemia (P91.0), acquired periventricular cysts of newborn (P91.1), neonatal cerebral leukomalacia (P91.2), neonatal cerebral irritability (P91.3), neonatal cerebral depression (P91.4), neonatal coma (P91.5), other specified disturbances of cerebral status of newborn (P91.8) and disturbance of cerebral status of newborn, unspecified (P91.9).

To report this condition, pick the subcode that matches the documentation: P91.60 (unspecified), P91.61 ([HIE]), P91.62 ([HIE]) and P91.63 ([HIE]).

Don't report P91.6 together with the conditions in its Excludes1 note: Neonatal cerebral depression (P91.4), Neonatal cerebral irritability (P91.3) and Neonatal coma (P91.5).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.