P81.9
Disturbance of temperature regulation of newborn, unspecified
Billable FY2026 2025-10-01 → 2026-09-30
This is the unspecified option. 2 more
specific codes sit alongside it. Worth
checking whether the documentation supports one of them.
Exclusions 5 never code together
P00-P96chapter
Excludes2 — not included here, but the patient may have both. Code both when documented.
Instructional notes 3
P81.9code
Inclusion terms
- Fever of newborn NOS
P00-P96chapter
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 6
- Disorder (of) — see also Disease
- temperature regulation, newborn P81.9
- Disturbance (s) — see also Disease
- temperature
- regulation, newborn P81.9
- temperature
- Newborn (infant) (liveborn) (singleton) Z38.2
- fever P81.9
- Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor) R50.9
- newborn P81.9
- Hyperthermia (of unknown origin) — see also Hyperpyrexia
- newborn P81.9
- Pyrexia (of unknown origin) R50.9
- newborn P81.9
Alongside this code 2 same parent — P81
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.