P91.63

Severe hypoxic ischemic encephalopathy [HIE]

Billable FY2026 2025-10-01 → 2026-09-30

Exclusions 8 never code together

Excludes1

Excludes2

congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)Q00-Q99
endocrine, nutritional and metabolic diseases (E00-E88)E00-E88
injury, poisoning and certain other consequences of external causes (S00-T88)S00-T88
neoplasms (C00-D49)C00-D49
tetanus neonatorum (A33)A33

Excludes1 — never code together. The excluded condition and this one are mutually exclusive.

Excludes2 — not included here, but the patient may have both. Code both when documented.

Instructional notes 2

Notes

Codes from this chapter are for use on newborn records only, never on maternal records

Includes

conditions that have their origin in the fetal or perinatal period (before birth through the first 28 days after birth) even if morbidity occurs later

Index entries leading here 2

Newborn (infant) (liveborn) (singleton) Z38.2
- affected by
  - hypoxic ischemic encephalopathy [HIE] P91.60
    - severe P91.63
Encephalopathy (acute) G93.40
- hypoxic ischemic P91.60
  - severe P91.63

Alongside this code 3 same parent — P91.6

Additional references

AHA Coding Clinic® Licence required

Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.

Present FY2024–FY2027.