ICD-10-PCS Code For Whole Body: Procedure Code Group Overview

The International Classification of Diseases, Tenth Revision, Procedure Coding System (ICD-10-PCS) code group CW7N includes procedures performed to introduce unsealed radioactive materials for systemic therapy in the whole body. These ICD-10-PCS codes are used for inpatient documentation when systemic nuclear medicine therapy with unsealed radioisotopes, such as phosphorus-32, is administered for therapeutic purposes. Accurate coding within the ICD-10-PCS CW7N group is essential for proper inpatient reimbursement, as it captures the specific procedure performed and supports clinical documentation accuracy.

Customize your policy alerts

Sign up for ICD-10-PCS Code For Whole Body: Procedure Code Group Overview policy alerts

Get alerted when relevant policies change without checking for updates manually.

Monitor payer policy activity

Receive email alerts as soon as relevant payer policies are published or updated.

Whole Body Systemic Nuclear Medicine Therapy Procedure Overview

Procedures in this group involve introduction of unsealed radioactive materials into the body for systemic therapeutic purposes, targeting the whole body and the anatomical regions body system. These systemic nuclear medicine therapy procedures deliver radioactive phosphorus to treat conditions that require radiation distributed throughout the body. Accurate ICD-10-PCS coding reflects the specific operation and body part targeted and is important for proper inpatient documentation and reimbursement.

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
C	Section	Nuclear Medicine
W	Body System	Anatomical Regions
7	Operation	Systemic Nuclear Medicine Therapy
N	Body Part	Whole Body

Explore openpayer tools

View all tools

ICD-10-PCS Code For Whole Body: Procedure Code Group Overview

Customize your policy alerts

Sign up for ICD-10-PCS Code For Whole Body: Procedure Code Group Overview policy alerts

Get alerted when relevant policies change without checking for updates manually.

Monitor payer policy activity

Receive email alerts as soon as relevant payer policies are published or updated.

Whole Body Systemic Nuclear Medicine Therapy Procedure Overview

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
C	Section	Nuclear Medicine
W	Body System	Anatomical Regions
7	Operation	Systemic Nuclear Medicine Therapy
N	Body Part	Whole Body

When to Use

Use codes from this group when an unsealed radioactive therapeutic agent is administered for whole body systemic treatment in an inpatient setting. Select the specific ICD-10-PCS code that matches the operation of systemic nuclear medicine therapy and the whole body body part.

ICD-10-PCS Codes

5 rows

ICD-10-PCS Code	Description
CW7N8ZZ	Systemic Nuclear Medicine Therapy of Whole Body using Samarium 153 (Sm-153)
CW7NGZZ	Systemic Nuclear Medicine Therapy of Whole Body using Iodine 131 (I-131)
CW7NNZZ	Systemic Nuclear Medicine Therapy of Whole Body using Phosphorus 32 (P-32)
CW7NPZZ	Systemic Nuclear Medicine Therapy of Whole Body using Strontium 89 (Sr-89)
CW7NYZZ	Systemic Nuclear Medicine Therapy of Whole Body using Other Radionuclide

Typical Clinical Scenarios

An elderly patient with widely metastatic, symptomatic bone pain from hormone-refractory prostate cancer is admitted for inpatient pain control after outpatient measures failed; systemic radiopharmaceutical therapy is chosen to deliver targeted beta radiation throughout the skeleton to reduce diffuse bone pain and improve mobility. A whole-body unsealed radionuclide therapeutic is administered under inpatient monitoring for radiation safety and symptom management. Typical codes: CW7NPZZ
A middle-aged patient with polycythemia vera presenting with marked symptomatic splenomegaly and hyperviscosity is admitted for inpatient cytoreductive therapy; systemic administration of a radiopharmaceutical that distributes throughout the body is used to reduce hematopoietic activity. The procedure delivers unsealed radioactive phosphorus systemically to achieve therapeutic myelosuppression while the patient remains hospitalized for monitoring of blood counts and complications. Typical codes: CW7NNZZ
A patient with widely metastatic differentiated thyroid carcinoma, previously treated with surgery and outpatient radioiodine, is admitted for a higher-dose, whole-body systemic radionuclide therapy because of progressive disease and need for inpatient isolation and monitoring for radiation safety or complications. A whole-body unsealed radioisotope is administered systemically to ablate residual disease and metastatic foci. Typical codes: CW7NGZZ

ICD-10-PCS Code For Abdomen: Procedure Code Group Overview

CW73-CHEST-SYSTEMIC-NUCLEAR-MEDICINE-THERAPY

ICD-10-PCS Code For Chest: Procedure Code Group Overview

CW7G-THYROID-SYSTEMIC-THERAPY

ICD-10-PCS Code For Thyroid: Procedure Code Group Overview

CW7Y-ANATOMICAL-REGIONS-SYSTEMIC-THERAPY

ICD-10-PCS Code For Anatomical Regions: Procedure Code Group Overview

Frequently Asked Questions

References

1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.

Published by

Trek Health powers OpenPayer with a leading commercial payer intelligence platform, seamlessly converting fragmented payer data into actionable insights for provider organizations.

Trek Health ingests and normalizes Transparency in Coverage data and payer policy updates to give provider organizations a clear view of how commercial reimbursement behaves across markets, payers, and services. Our platform transforms raw payer disclosures into structured intelligence that supports contract evaluation, payer negotiations, and service line strategy. By combining market benchmarks with ongoing policy visibility, Trek helps teams identify variability, risk, and opportunity in commercial reimbursement. The result is faster insight, stronger negotiating positions, and more informed financial decisions.

Explore openpayer tools

View all tools

When to Use

ICD-10-PCS Codes

5 rows

ICD-10-PCS Code	Description
CW7N8ZZ	Systemic Nuclear Medicine Therapy of Whole Body using Samarium 153 (Sm-153)
CW7NGZZ	Systemic Nuclear Medicine Therapy of Whole Body using Iodine 131 (I-131)
CW7NNZZ	Systemic Nuclear Medicine Therapy of Whole Body using Phosphorus 32 (P-32)
CW7NPZZ	Systemic Nuclear Medicine Therapy of Whole Body using Strontium 89 (Sr-89)
CW7NYZZ	Systemic Nuclear Medicine Therapy of Whole Body using Other Radionuclide

Typical Clinical Scenarios

An elderly patient with widely metastatic, symptomatic bone pain from hormone-refractory prostate cancer is admitted for inpatient pain control after outpatient measures failed; systemic radiopharmaceutical therapy is chosen to deliver targeted beta radiation throughout the skeleton to reduce diffuse bone pain and improve mobility. A whole-body unsealed radionuclide therapeutic is administered under inpatient monitoring for radiation safety and symptom management. Typical codes: CW7NPZZ
A middle-aged patient with polycythemia vera presenting with marked symptomatic splenomegaly and hyperviscosity is admitted for inpatient cytoreductive therapy; systemic administration of a radiopharmaceutical that distributes throughout the body is used to reduce hematopoietic activity. The procedure delivers unsealed radioactive phosphorus systemically to achieve therapeutic myelosuppression while the patient remains hospitalized for monitoring of blood counts and complications. Typical codes: CW7NNZZ
A patient with widely metastatic differentiated thyroid carcinoma, previously treated with surgery and outpatient radioiodine, is admitted for a higher-dose, whole-body systemic radionuclide therapy because of progressive disease and need for inpatient isolation and monitoring for radiation safety or complications. A whole-body unsealed radioisotope is administered systemically to ablate residual disease and metastatic foci. Typical codes: CW7NGZZ

ICD-10-PCS Code For Abdomen: Procedure Code Group Overview

CW73-CHEST-SYSTEMIC-NUCLEAR-MEDICINE-THERAPY

ICD-10-PCS Code For Chest: Procedure Code Group Overview

CW7G-THYROID-SYSTEMIC-THERAPY

ICD-10-PCS Code For Thyroid: Procedure Code Group Overview

CW7Y-ANATOMICAL-REGIONS-SYSTEMIC-THERAPY

ICD-10-PCS Code For Anatomical Regions: Procedure Code Group Overview

Frequently Asked Questions

References

1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.

Published by

Trek Health powers OpenPayer with a leading commercial payer intelligence platform, seamlessly converting fragmented payer data into actionable insights for provider organizations.

OpenPayer

ICD-10-PCS Code For Whole Body: Procedure Code Group Overview

Sign up for ICD-10-PCS Code For Whole Body: Procedure Code Group Overview policy alerts

Whole Body Systemic Nuclear Medicine Therapy Procedure Overview

Code Attributes

OpenPayer

ICD-10-PCS Code For Whole Body: Procedure Code Group Overview

Sign up for ICD-10-PCS Code For Whole Body: Procedure Code Group Overview policy alerts

Whole Body Systemic Nuclear Medicine Therapy Procedure Overview

Code Attributes

When to Use

ICD-10-PCS Codes

Typical Clinical Scenarios

Related Codes

References

When to Use

ICD-10-PCS Codes

Typical Clinical Scenarios

Related Codes

References

ICD-10-PCS Code For Whole Body: Procedure Code Group Overview

Sign up for ICD-10-PCS Code For Whole Body: Procedure Code Group Overview policy alerts

Whole Body Systemic Nuclear Medicine Therapy Procedure Overview

Code Attributes

ICD-10-PCS Code For Whole Body: Procedure Code Group Overview

Sign up for ICD-10-PCS Code For Whole Body: Procedure Code Group Overview policy alerts

Whole Body Systemic Nuclear Medicine Therapy Procedure Overview

Code Attributes

When to Use

ICD-10-PCS Codes

Typical Clinical Scenarios

Related Codes

Which procedures are included in the ICD-10-PCS code group CW7N?

What clinical scenario does ICD-10-PCS code `CW7NNZZ` describe?

Under which ICD-10-PCS section and body system do these codes fall?

Why is accurate coding within the CW7N group important for inpatient care?

Which radionuclides are explicitly listed for whole body systemic therapy in this code group?

References

When to Use

ICD-10-PCS Codes

Typical Clinical Scenarios

Related Codes

Which procedures are included in the ICD-10-PCS code group CW7N?

What clinical scenario does ICD-10-PCS code `CW7NNZZ` describe?

Under which ICD-10-PCS section and body system do these codes fall?

Why is accurate coding within the CW7N group important for inpatient care?

Which radionuclides are explicitly listed for whole body systemic therapy in this code group?

References