DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

P81 Other disturbances of temperature regulation of newborn

  • Header · not billable

P81 is not billable. The category heads 3 billable codes in FY2027: the 3 codes directly below it.

Index → code

  • Pyrexia (of unknown origin)newborn → P81.9
  • Hyperthermia (of unknown origin)newborn → P81.9
  • Disorder (of)temperature regulation, newborn → P81.9

Where it sits

  1. Chapter 16 Certain conditions originating in the perinatal period (P00-P96)
  2. P80-P83 Conditions involving the integument and temperature regulation of newborn (P80-P83)
  3. P81 Other disturbances of temperature regulation of newborn
Billable codes
3
Subdivisions
3
CC / MCC codes
0 / 0
HCC V28 codes
0
New FY2027
0
Index entries
12

Codes in P81

  1. P81.0
    Environmental hyperthermia of newborn
    Billable
  2. P81.8
    Other specified disturbances of temperature regulation of newborn
    Billable
  3. P81.9
    Disturbance of temperature regulation of newborn, unspecified
    Billable
    Inclusion terms 1

    Inclusion terms

    • Fever of newborn NOS

Sources of each column.

Instructions

Notes that also apply

Chapter 16 instructions (Notes 1, Includes 1, Excludes2 5): printed on the chapter 16 page.

Index entries

  • Disorder (of)temperature regulation, newborn → P81.9
  • Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor)newborn → P81.9
  • Hyperthermia (of unknown origin)newborn → P81.9
  • Newborn (infant) (liveborn) (singleton)fever → P81.9
  • Pyrexia (of unknown origin)newborn → P81.9
  • Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor)newbornenvironmental → P81.0
  • Hyperthermia (of unknown origin)newbornenvironmental → P81.0
  • Newborn (infant) (liveborn) (singleton)feverenvironmentally-induced → P81.0
  • Pyrexia (of unknown origin)newbornenvironmentally-induced → P81.0
  • Disorder (of)temperature regulation, newbornspecified NEC → P81.8
  • Disturbance(s)temperatureregulation, newborn → P81.9
  • Disturbance(s)temperatureregulation, newbornspecified NEC → P81.8

NCHS Alphabetic Index. Index first, then the Tabular List.

Hierarchy