AutoICD API

P81.9

Billable

Disturbance of temperature regulation of newborn, unsp

Disturbance of temperature regulation of newborn, unspecified

Status

Billable / Specific

Block

P80-P83

Parent Code

P81

ICD-11 Mapping

1 equivalent

Coding Notes

Inclusion Terms

Alternative clinical terms for this condition

  • Fever of newborn NOS

Includes

Conditions included under this code

  • 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

Excludes 2

Conditions not included here, but the patient may have both

Related Codes(2)
P81.0

Environmental hyperthermia of newborn

BillableP81.8

Oth disturbances of temperature regulation of newborn

Billable
ICD-11 Equivalents(1)

ICD-11 Equivalents

View full mapping

Corresponding ICD-11 codes from the WHO crosswalk mapping

KD1ZDisturbances of temperature regulation of newborn, unspecifiedequivalentPrimary
Also Known As / Clinical Terms(203)

SNOMED CT

UMLS

Clinical Terms

  • Febrile syndrome
  • Febrile leucopenia
  • Intermittent fever
  • Fever
  • Body temperature above reference range
  • Prolonged fever
  • Neurogenic hyperthermia
  • Myoclonus associated with fever
  • Perinatal disorder of skin and temperature regulation
  • Gradual fall of fever
  • Hyperthermia
  • Sweating fever
  • Fever of newborn NOS
  • Pyrexial
  • Rapid fall of fever
  • Lysis of fever
  • neonatal fever
  • Febrile myoclonus
  • Temperature elevated
  • Feels feverish
  • Fever greater than 38 Celsius
  • Temperature raised
  • Increased body temperature
  • Disorder characterised by fever
  • newborn fever
  • Febrile illness (fever)
  • Irregular fever
  • Fever, diurnal variation
  • Saddleback fever
  • Pyrexia of unknown origin co-occurrent with human immunodeficiency virus infection
  • Fever of newborn (finding)
  • Viral fever
  • SFTS - Severe Fever with Thrombocytopenia Syndrome
  • Calor
  • Fever due to infection
  • Fever of unknown origin co-occurrent with human immunodeficiency virus infection
  • fevers newborn
  • Chill
  • Finding of phase of fever
  • Feeling feverish
  • Has a temperature
  • Fast fall of fever
  • Fever defervescence
  • Slightly remittent fever
  • Fever with chills
  • Reversed diurnal fever
  • Severe fever with thrombocytopenia syndrome
  • Hyperthermia in newborn
  • Fever with infection
  • Febrile illness
  • Hypothalamic fever
  • fever newborn
  • Rising phase of fever
  • Mild pyrexia
  • Shivering
  • Periodic fever, not disease
  • Increased skin temperature
  • Staircase fever
  • Fever neonatal
  • Picket fence fever
  • Chills and fever
  • Disorder characterized by fever
  • Shivering or rigors
  • Feverish cold
  • Continuous fever
  • Plateau phase of fever
  • F.U.O.
  • Biphasic fever
  • Typhus inversus
  • Hyperthermia of newborn
  • Sustained fever
  • Febrile
  • Fever of unknown origin
  • Central fever
  • Falling phase of fever
  • Pyrexia of unknown origin
  • FTLS - Fever, thrombocytopenia, and leukopenia syndrome
  • Febrile leukopenia
  • Febrile disorder
  • Fever - rapid rise
  • Phase of fever - finding
  • Fever caused by virus
  • Low grade pyrexia
  • Fever of newborn
  • High body temperature
  • PUO - Pyrexia of unknown origin
  • Remittent fever
  • Fever with rigors
  • FTLS - Fever, thrombocytopenia, and leucopenia syndrome
  • Gradual rise of fever
  • Fever greater than 100.4 Fahrenheit
  • fever newborns
  • Dromedary fever
  • Pyrexia
  • Crisis of fever
  • Low grade fever
  • Acute rise of fever
  • Fever - fast rise
Frequently Asked Questions
What is the ICD-10 code for disturbance of temperature regulation of newborn, unsp?

The ICD-10-CM code for disturbance of temperature regulation of newborn, unsp is P81.9. The full clinical description is "Disturbance of temperature regulation of newborn, unspecified". P81.9 is a billable/specific code that can be used on insurance claims and medical billing.

What does ICD-10 code P81.9 mean?

ICD-10-CM code P81.9 represents “Disturbance of temperature regulation of newborn, unspecified”. It is classified under Chapter 16: Certain Conditions Originating in the Perinatal Period and is a billable/specific code that can be used on a claim.

Is P81.9 a billable code?

Yes, P81.9 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.

What chapter is P81.9 in?

P81.9 is in Chapter 16: Certain Conditions Originating in the Perinatal Period (codes P00-P96).

What SNOMED CT codes does P81.9 map to?

P81.9 maps to 45 SNOMED CT concepts: 271749004, 248444008, 50177009, 17038008, 248449003, and 40 more. SNOMED CT is a clinical terminology used in electronic health records.

What are the UMLS CUIs for P81.9?

P81.9 is linked to 2 UMLS Concept Unique Identifiers: C0495453, C0235839. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.

How does P81.9 relate to ICF functioning codes?

ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like disturbance of temperature regulation of newborn, unsp affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.

What is the ICD-11 equivalent of P81.9?

P81.9 maps to the ICD-11 code: KD1Z (Disturbances of temperature regulation of newborn, unspecified).

Automate ICD-10 Coding With AI

Send clinical text to the AutoICD API and get back structured ICD-10 codes with confidence scores. Integrates into any EHR or billing system in minutes.

Try FreeView API Docs

Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.