Is ICD-10-CM code X32 billable?

No, X32 (Exposure to sunlight) is a non-billable ICD-10-CM code. It must be coded to a more specific subcategory before it can be used for reimbursement.

What chapter does ICD-10-CM code X32 belong to?

X32 belongs to Chapter 20 of the ICD-10-CM tabular list: V00–Y99 (External Causes of Morbidity).

X32Not billable, use a more specific code below

Exposure to sunlight

In Exposure to forces of nature (X30-X39), chapter 20: External Causes of Morbidity

3 billable codes under X32: none are a CC or MCC; none map to an HCC.

Instructional notes

Excludes1: not coded here, use a different code

man-made radiation (tanning bed) (W89)

Excludes2: not included here, code separately if applicable

radiation-related disorders of the skin and subcutaneous tissue (L55-L59)

Official coding guidelines

From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.

Covers how to report external cause codes (V00-Y99) describing cause, intent, place, activity, and status. They are never principal or first-listed, and reporting is voluntary unless required.

General External Cause Coding Guidelines (page 88)
Place of Occurrence Guideline (page 89)
Activity Code (page 89)
Place of Occurrence, Activity, and Status Codes Used with other External Cause Code (page 89)
If the Reporting Format Limits the Number of External Cause Codes (page 90)
Multiple External Cause Coding Guidelines (page 90)
Child and Adult Abuse Guideline (page 90)
Unknown or Undetermined Intent Guideline (page 91)

Read Section I.C.20 (page 87), 3 more topics

All codes under X32

X32 can't be used on a claim. Pick a billable code below; grey headings group them.

X32 MS-DRGs

This code does not group to an MS-DRG as a principal diagnosis.

Other codes that refer to X32

Notes on these codes point to X32.

L56 Use Additional Code: code to identify the source of the ultraviolet radiation (W89, X32)
V93.2 Excludes1: exposure to sunlight while on board watercraft (X32)
W85-W99 Excludes1: sunlight (X32)
W88 Excludes1: exposure to sunlight (X32)
W89 Excludes2: exposure to sunlight (X32)
W90 Excludes2: exposure to sunlight (X32)
X30 Excludes1: exposure to sunlight (X32)
X39.0 Excludes1: exposure to sunlight (X32)

About the condition

Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.

Sun Exposure

Ultraviolet (UV) rays are an invisible form of radiation. They can pass through your skin and damage your skin cells. Sunburns are a sign of skin damage. Suntans aren't healthy, either. They appear after the sun's rays have already killed some cells and damaged others. UV rays can cause skin damage during any season or at any temperature. They can also cause eye problems, wrinkles, skin spots, and skin cancer.

Code history

Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.