- P81.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
- The 2024 edition of ICD-10-CM P81.9 became effective on October 1, 2022.
- This is the American ICD-10-CM version of P81.9 – other international versions of ICD-10 P81.9 may differ.
ICD-10-CM P81.9 is grouped within Diagnostic Related Group(s):
- 794 Neonate with other significant problems
Applicable To
- Fever of newborn NOS
Code History
- 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
- 2016 (effective 10/1/2015): No change
- 2017 (effective 10/1/2016): No change
- 2018 (effective 10/1/2017): No change
- 2019 (effective 10/1/2018): No change
- 2020 (effective 10/1/2019): No change
- 2021 (effective 10/1/2020): No change
- 2022 (effective 10/1/2021): No change
- 2024 (effective 10/1/2022): No change
Diagnosis Index entries containing back-references to P81.9:
- temperature regulation, newborn > Disorder (of)
- temperature > Disturbance (s)
- regulation, newborn > temperature P81.9
- newborn > Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor) R50.9
- newborn > Hyperthermia (of unknown origin)
- fever > Newborn (infant) (liveborn) (singleton) Z38.2
- newborn > Pyrexia (of unknown origin) R50.9