2027 ICD-10-CM Diagnosis Code P80.9Hypothermia of newborn, unspecified
ICD-10-CM Codes›P00–P96›P80-P83›P80
- Billable — Valid for Submission
- Not Chronic
P80.9 is a billable ICD-10-CM diagnosis code for hypothermia of newborn, unspecified. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 794. Coders also document this condition as decreased skin temperature. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified and unspecified perinatal conditions.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Decreased skin temperature
- Hypothermia
- Hypothermia of newborn
- Neonatal disturbance of temperature regulation
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to P80.9: its own notes plus those printed at Chapter 16. A note printed at a category, block or chapter applies to every code under it.
Includes
Further defines, or gives examples of, the content of the category.
- 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
Excludes2
Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.
Notes
General instructions on how these codes are used.
- Codes from this chapter are for use on newborn records only, never on maternal records
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name P80.9, its category, or a range that includes it.
Excludes1 2
These codes carry an Excludes1 note naming P80.9: they are not reported together with it, unless the two conditions are unrelated.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Hypothermia
Cold weather can affect your body in different ways. You can get frostbite, which is an injury to the body that is caused by freezing. Your body can also lose heat faster than you can produce it. That can cause hypothermia, or abnormally low body temperature. It can make you sleepy, confused, and clumsy.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert P80.9 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About P80.9Overview
What is the ICD-10 code for hypothermia of newborn, unspecified?
The ICD-10-CM code for hypothermia of newborn, unspecified is P80.9 (sometimes written as P809). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is P80.9 (Hypothermia of newborn) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report hypothermia of newborn, unspecified on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does P80.9 group to?
When hypothermia of newborn, unspecified is the principal diagnosis on an inpatient stay, it groups to MS-DRG 794 (neonate with Other Significant Problems), which carries a relative weight of 1.4934. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of P80.9?
Under the General Equivalence Mappings, hypothermia of newborn, unspecified converts to ICD-9-CM 778.3 (NB hypothermia NEC). The mapping is approximate, so confirm the match fits the documentation.
