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  6. 2024 ICD-10-CM Code P81.9

2024 ICD-10-CM Diagnosis Code P81.9

Disturbance of temperature regulation of newborn, unspecified

ICD-10-CM Code:
P81.9
ICD-10 Code for:
Disturbance of temperature regulation of newborn, unsp
Is Billable?
Yes - Valid for Submission
Chronic Condition Indicator: [1]
Not chronic
Code Navigator:

Code Classification

  • Certain conditions originating in the perinatal period
    (P00–P96)
    • Conditions involving the integument and temperature regulation of newborn
      (P80-P83)
      • Other disturbances of temperature regulation of newborn
        (P81)

P81.9 is a billable diagnosis code used to specify a medical diagnosis of disturbance of temperature regulation of newborn, unspecified. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024.

Unspecified diagnosis codes like P81.9 are acceptable when clinical information is unknown or not available about a particular condition. Although a more specific code is preferable, unspecified codes should be used when such codes most accurately reflect what is known about a patient's condition. Specific diagnosis codes should not be used if not supported by the patient's medical record.

Approximate Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Acute rise of fever
  • Biphasic fever
  • Body temperature above reference range
  • Central fever
  • Chill
  • Continuous fever
  • Disorder characterized by fever
  • Disturbance of temperature regulation of newborn
  • Falling phase of fever
  • Febrile leukopenia
  • Feeling feverish
  • Fever
  • Fever defervescence
  • Fever due to infection
  • Fever greater than 100.4 Fahrenheit
  • Fever of newborn
  • Fever with chills
  • Fever, diurnal variation
  • Feverish cold
  • Gradual fall of fever
  • Gradual rise of fever
  • Hyperthermia
  • Hyperthermia
  • Hyperthermia in newborn
  • Increased skin temperature
  • Intermittent fever
  • Irregular fever
  • Low grade pyrexia
  • Myoclonus associated with fever
  • Neurogenic hyperthermia
  • Perinatal disorder of skin and temperature regulation
  • Phase of fever - finding
  • Phase of fever - finding
  • Phase of fever - finding
  • Phase of fever - finding
  • Phase of fever - finding
  • Phase of fever - finding
  • Phase of fever - finding
  • Plateau phase of fever
  • Prolonged fever
  • Pyrexia of unknown origin
  • Pyrexia of unknown origin
  • Pyrexia of unknown origin co-occurrent with human immunodeficiency virus infection
  • Rapid fall of fever
  • Remittent fever
  • Reversed diurnal fever
  • Rising phase of fever
  • Severe fever with thrombocytopenia syndrome virus
  • Shivering or rigors
  • Slightly remittent fever
  • Staircase fever
  • Sweating fever
  • Viral fever

Clinical Classification

Clinical Information

  • Drug Fever

    drug-induced fever.

  • Hyperthermia

    an abnormal elevation of body temperature, usually as a result of inability to regulate core body temperature due to non-pathologic factors.

  • Hyperthermia, Induced

    abnormally high temperature intentionally induced in living things regionally or whole body. it is most often induced by radiation (heat waves, infra-red), ultrasound, or drugs.

  • Malignant Hyperthermia

    rapid and excessive rise of temperature accompanied by muscular rigidity following general anesthesia.

  • Sweating Fever

    a febrile response accompanied by diaphoresis.

Tabular List of Diseases and Injuries

The following annotation back-references are applicable to this diagnosis code. The Tabular List of Diseases and Injuries is a list of ICD-10-CM codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more.


Inclusion Terms

Inclusion Terms
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
  • Fever of newborn NOS

Index to Diseases and Injuries References

The following annotation back-references for this diagnosis code are found in the injuries and diseases index. The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10-CM code(s).

Convert P81.9 to ICD-9-CM

  • ICD-9-CM Code: 778.4 - NB temp regulat dis NEC
    Approximate Flag - The approximate mapping means there is not an exact match between the ICD-10 and ICD-9 codes and the mapped code is not a precise representation of the original code.

Patient Education


Uncommon Infant and Newborn Problems

It can be scary when your baby is sick, especially when it is not an everyday problem like a cold or a fever. You may not know whether the problem is serious or how to treat it. If you have concerns about your baby's health, call your health care provider right away.

Learning information about your baby's condition can help ease your worry. Do not be afraid to ask questions about your baby's care. By working together with your health care provider, you make sure that your baby gets the best care possible.


[Learn More in MedlinePlus]

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.