D7Y58ZZHyperthermia of Thorax Lymphatics

Radiation Therapy›Lymphatic and Hematologic System›Other Radiation

Billable / Specific Code

ICD-10-PCS D7Y58ZZ

CMS Source: FY 2026 ICD-10-PCS dataset. Effective Oct 1, 2025 – Sep 30, 2026.

D7Y58ZZ is a billable ICD-10-PCS procedure code for Hyperthermia of Thorax Lymphatics. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). In AHRQ's Clinical Classifications Software (CCSR), this procedure falls under Radiation therapy, NEC.

Code Identity

ICD-10-PCS Code

D7Y58ZZ

Billable Status

Yes — Valid for Submission

Code Describes

Hyperthermia of Thorax Lymphatics

Short Description

Hyperthermia of Thorax Lymphatics

Same as the full description in the CMS dataset.

Parent Code

D7Y

PCS Table Breakdown

Each ICD-10-PCS code is built from seven characters, each an axis of the procedure. Hover or tap the icons for the official CMS definitions.

Position	Designation	Value	Meaning
1	Section	D	Radiation Therapy
2	Body System	7	Lymphatic and Hematologic System
3	Modality	Y	Other Radiation
4	TreatmentSite	5	Lymphatics, Thorax
5	ModalityQualifier	8	Hyperthermia
6	Isotope	Z	None
7	Qualifier	Z	None

In the ICD-10-PCS Alphabetic Index

These FY 2026 ICD-10-PCS Alphabetic Index entries lead to D7Y58ZZ:

Hyperthermia, Radiation Therapy, Lymphatics, Thorax

Direct entry for this code

Browse the full ICD-10-PCS Alphabetic Index →

Clinical Classification (CCSR)

AHRQ groups D7Y58ZZ into these clinical categories.

RAD004

Radiation therapy, NEC

Clinical domain: Radiation Therapy

Convert to ICD-9-PCS

Closest ICD-9-PCS equivalents for D7Y58ZZ under the General Equivalence Mappings.

99.85

Approximate match.

Similar Procedure Codes

Questions About D7Y58ZZ

Is D7Y58ZZ a billable code?

Yes. D7Y58ZZ is a complete seven-character ICD-10-PCS code, specific enough to report Hyperthermia of Thorax Lymphatics on inpatient claims from October 1, 2025 through September 30, 2026.

What do the characters in D7Y58ZZ mean?

D7Y58ZZ breaks down character by character: the 1st character D is the Section (Radiation Therapy); the 2nd character 7 is the Body System (Lymphatic and Hematologic System); the 3rd character Y is the Modality (Other Radiation); the 4th character 5 is the TreatmentSite (Lymphatics, Thorax); the 5th character 8 is the ModalityQualifier (Hyperthermia); the 6th character Z is the Isotope (None); the 7th character Z is the Qualifier (None).

What is the ICD-9-PCS equivalent of D7Y58ZZ?

Under the General Equivalence Mappings, Hyperthermia of Thorax Lymphatics crosswalks to ICD-9-PCS 99.85. The mapping is approximate, so confirm it fits the documentation.