2025 ICD-10-CM Procedure Code 6A4Z0ZZ

Hypothermia, Single

ICD-10-PCS Code:: 6A4Z0ZZ
ICD-10-PCS Code for:: Hypothermia, Single
Is Billable?: Yes - Valid for Submission
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6A4Z0ZZ is a billable procedure code used to specify the performance of hypothermia, single. The code is valid for the year 2025 for the submission of HIPAA-covered transactions. The procedure code involves extracorporeal lowering of body temperature.

Table of Contents

Code Information
PCS Table
Clinical Classification
Convert to ICD-9-PCS
Other Similar Codes

6A4Z0ZZ PCS Table

In an PCS table each code is represented by up seven alphanumeric characters, with each character in the table respresenting different aspects of the procedure. In the table provided below, each row represents an individual character and includes information about the character's position, designation, label, and procedure notes. For this PCS table the procedure code is in the extracorporeal or systemic therapies section and is part of the physiological systems body system, classified under hypothermia operation. The applicable bodysystem for this procedure code is none.

Position	Designation	Character	Label	Procedures Notes
1	Section	6	Extracorporeal or Systemic Therapies
2	Body System	A	Physiological Systems
3	Operation	4	Hypothermia	Involves: Extracorporeal lowering of body temperature
4	BodySystem	Z	None
5	Duration	0	Single
6	Qualifier	Z	No Qualifier	Explanation: The value Z is used for the sixth character to indicate that a specific qualifier does not apply to the procedure.
7	Qualifier	Z	No Qualifier	Explanation: The value Z is used for the seventh character to indicate that a specific qualifier does not apply to the procedure.

Clinical Classification

Hypothermia therapy

CCSR Code: EST004

Clinical Domain: Extracorporeal or Systemic Therapies EST contains 5 categories that include procedures performed outside the body for a therapeutic purpose other than to assist the body with performing a physiological function. Examples include pheresis therapy and hypothermia therapy.

Convert to ICD-9-PCS

Below are the ICD-9=PCS code(s) that most closely match this ICD-10-PCS code, based on the General Equivalence Mappings (GEMs). This ICD-10-PCS to ICD-9-PCS crosswalk tool is helpful for coders who need to reference legacy diagnosis codes for audits, historical claims, or approximate code comparisons.

ICD-9-PCS Code

Code: 9981

Approximate Flag: This is an approximate match. The ICD-9-PCS code reflects a close but not exact equivalent of the ICD-10-PCS procedure.

Other ICD-10-PCS Codes Used for Hypothermia None

What is ICD-10-PCS?

The ICD-10 Procedure Coding System (ICD-10-PCS) is a catalog of procedural codes used by medical professionals for hospital inpatient healthcare settings. The Centers for Medicare and Medicaid Services (CMS) maintain the catalog in the U.S. releasing yearly updates. The 2025 ICD-10-PCS codes are to be used for discharges occurring from October 1, 2024 through September 30, 2025.

Each ICD-10-PCS code has a structure of seven alphanumeric characters and contains no decimals. The first character defines the major "section". Depending on the "section" the second through seventh characters mean different things.