ICD-10-CM Code For Other Disorders Of Skin And Subcutaneous Tissue Related To Radiation: Group Overview

The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group L59 includes radiation-related dermatitis, skin atrophy, fibrosis, and other skin and subcutaneous tissue reactions resulting from therapeutic or accidental exposure to ionizing radiation. These ICD-10-CM diagnosis codes are used to document dermatologic reactions to radiation, capturing severity, acute versus chronic presentations, and involvement of surrounding soft tissues. Accurate coding within the ICD-10-CM L59 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

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ICD-10-CM L59: Other Disorders Of Skin And Subcutaneous Tissue Related To Radiation Overview

This diagnosis group represents skin and subcutaneous tissue conditions caused by exposure to ionizing radiation, including acute and chronic radiation dermatitis and related reactions. It targets dermatologic sequelae of therapeutic or environmental radiation affecting the integumentary system. Accurate coding matters for correct claim submission and to reflect the clinical complexity for reimbursement.

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ICD-10-CM Code For Other Disorders Of Skin And Subcutaneous Tissue Related To Radiation: Group Overview

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ICD-10-CM L59: Other Disorders Of Skin And Subcutaneous Tissue Related To Radiation Overview

When to Use

Use a code from this group when a patient has a documented skin or subcutaneous tissue condition that is attributed to therapeutic or accidental radiation exposure. Select the code that reflects the specific diagnosis, timing (acute versus chronic), and severity documented in the clinical record.

ICD-10-CM Codes

3 rows

ICD-10-CM Code	Description
L59.0	Erythema ab igne [dermatitis ab igne]
L59.8	Other specified disorders of the skin and subcutaneous tissue related to radiation
L59.9	Disorder of the skin and subcutaneous tissue related to radiation, unspecified

DRG Codes

2 rows

DRG Code	Description
606	Minor Skin Disorders with MCC
607	Minor Skin Disorders without MCC

Typical Clinical Scenarios

An adult cancer patient several weeks after completing external beam radiation therapy to the chest presents with painful, erythematous, and desquamating skin confined to the radiation field. The patient reports escalating burning pain, weeping of serous fluid, and difficulty wearing clothing over the area, prompting outpatient evaluation and wound care management; a radiation-related dermatitis code from this group is assigned to document the skin reaction caused by therapeutic ionizing radiation. Typical codes: L59.0.
An elderly patient with a history of frequent diagnostic or therapeutic radiologic procedures develops chronic hyperpigmented, atrophic patches and telangiectasias in previously irradiated skin months to years after exposure; they seek dermatology consultation for cosmetic and symptomatic concerns. Because the findings represent a late, non-acute skin disorder attributable to prior radiation exposure, a non-acute radiation-related skin disorder code from this group is used to capture the chronic sequelae. Typical codes: L59.9, L59.8.
A patient undergoing palliative radiation for a pelvic malignancy presents to urgent care with severe ulceration and secondary infection within the radiation portal, associated with systemic signs such as fever and leukocytosis. The acute, complicated presentation requires documentation of a radiation-induced skin ulceration with superimposed infection as a comorbid condition contributing to the urgent problem; an appropriate radiation-related skin disorder code from this group is assigned alongside infection codes. Typical codes: L59.8, L59.0.

Related Codes

L55-SUNBURN

ICD-10-CM Code For Sunburn: Group Overview

L56-OTHER-ACUTE-SKIN-CHANGES

ICD-10-CM Code For Other Acute Skin Changes Due To Ultraviolet Radiation: Group Overview

L57-SKIN-CHANGES-DUE-TO-NONIONIZING-RADIATION

ICD-10-CM Code For Skin Changes Due To Chronic Exposure To Nonionizing Radiation: Group Overview

L58-RADIODERMATITIS

ICD-10-CM Code For Radiodermatitis: 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.

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When to Use

ICD-10-CM Codes

3 rows

ICD-10-CM Code	Description
L59.0	Erythema ab igne [dermatitis ab igne]
L59.8	Other specified disorders of the skin and subcutaneous tissue related to radiation
L59.9	Disorder of the skin and subcutaneous tissue related to radiation, unspecified

DRG Codes

2 rows

DRG Code	Description
606	Minor Skin Disorders with MCC
607	Minor Skin Disorders without MCC

Typical Clinical Scenarios

An adult cancer patient several weeks after completing external beam radiation therapy to the chest presents with painful, erythematous, and desquamating skin confined to the radiation field. The patient reports escalating burning pain, weeping of serous fluid, and difficulty wearing clothing over the area, prompting outpatient evaluation and wound care management; a radiation-related dermatitis code from this group is assigned to document the skin reaction caused by therapeutic ionizing radiation. Typical codes: L59.0.
An elderly patient with a history of frequent diagnostic or therapeutic radiologic procedures develops chronic hyperpigmented, atrophic patches and telangiectasias in previously irradiated skin months to years after exposure; they seek dermatology consultation for cosmetic and symptomatic concerns. Because the findings represent a late, non-acute skin disorder attributable to prior radiation exposure, a non-acute radiation-related skin disorder code from this group is used to capture the chronic sequelae. Typical codes: L59.9, L59.8.
A patient undergoing palliative radiation for a pelvic malignancy presents to urgent care with severe ulceration and secondary infection within the radiation portal, associated with systemic signs such as fever and leukocytosis. The acute, complicated presentation requires documentation of a radiation-induced skin ulceration with superimposed infection as a comorbid condition contributing to the urgent problem; an appropriate radiation-related skin disorder code from this group is assigned alongside infection codes. Typical codes: L59.8, L59.0.

Related Codes

L55-SUNBURN

ICD-10-CM Code For Sunburn: Group Overview

L56-OTHER-ACUTE-SKIN-CHANGES

ICD-10-CM Code For Other Acute Skin Changes Due To Ultraviolet Radiation: Group Overview

L57-SKIN-CHANGES-DUE-TO-NONIONIZING-RADIATION

ICD-10-CM Code For Skin Changes Due To Chronic Exposure To Nonionizing Radiation: Group Overview

L58-RADIODERMATITIS

ICD-10-CM Code For Radiodermatitis: 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.

ICD-10-CM Code For Other Disorders Of Skin And Subcutaneous Tissue Related To Radiation: Group Overview

Sign up for ICD-10-CM Code For Other Disorders Of Skin And Subcutaneous Tissue Related To Radiation: Group Overview policy alerts

ICD-10-CM L59: Other Disorders Of Skin And Subcutaneous Tissue Related To Radiation Overview

ICD-10-CM Code For Other Disorders Of Skin And Subcutaneous Tissue Related To Radiation: Group Overview

Sign up for ICD-10-CM Code For Other Disorders Of Skin And Subcutaneous Tissue Related To Radiation: Group Overview policy alerts

ICD-10-CM L59: Other Disorders Of Skin And Subcutaneous Tissue Related To Radiation Overview

When to Use

ICD-10-CM Codes

DRG Codes

Typical Clinical Scenarios

Related Codes

Which conditions are included in the ICD-10-CM L59 group?

What specific ICD-10-CM codes belong to this group?

How does accurate coding within L59 affect reimbursement?

Are acute versus chronic radiation reactions distinguished in this group?

Which DRGs are related to this diagnosis group?

References

When to Use

ICD-10-CM Codes

DRG Codes

Typical Clinical Scenarios

Related Codes

Which conditions are included in the ICD-10-CM L59 group?

What specific ICD-10-CM codes belong to this group?

How does accurate coding within L59 affect reimbursement?

Are acute versus chronic radiation reactions distinguished in this group?

Which DRGs are related to this diagnosis group?

References