Hypothermia, Single

ValidICD-10-PCS procedure code.

Valid for claims with a date of service in the current code year.

Valid FY2016 onwards.

What has happened to this code

Every change the publisher made, from 2014 to now. Entries marked draft are from the pre-implementation releases: ICD-10 took effect on 1 October 2015, so nothing before FY2016 was ever valid on a claim.

FY2014 Added to the draft code set draft Hypothermia, Single

What this code says

Each character is read in its own position, so the same letter means different things in different places. Definitions are CMS's own.

3. Root operation Hypothermia

Extracorporeal lowering of body temperature

Codes in the same group

Code	Description	Status
6A4T00A	Hypothermia of Urinary System using Donor Organ Protective Thermal Insulation, Single, Intraoperative	Valid
6A4Z1ZZ	Hypothermia, Multiple	Valid

At a glance

Code: 6A4Z0ZZ
System: ICD-10-PCS
Status: Valid
Valid: FY2016 onwards
In the code set: FY2016 onwards
Part of: 6A4

Where this code sits

Section 6 Extracorporeal or Systemic Therapies
Body system 6A Physiological Systems
Category 6A4 Extracorporeal or Systemic Therapies, Physiological Systems, Hypothermia
This code 6A4Z0ZZ Hypothermia, Single

What each character means

6 Section Extracorporeal or Systemic Therapies
A Body system Physiological Systems
4 Root operation Hypothermia
Z Body System None
0 Duration Single
Z Qualifier No Qualifier
Z Qualifier No Qualifier

Source

ICD-10-PCS FY2027 code set, published by the Centers for Medicare and Medicaid Services (CMS).

Effective October 1, 2026.

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