Is ICD-10-CM code L13 billable?

No, L13 (Other bullous disorders) 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 L13 belong to?

L13 belongs to Chapter 12 of the ICD-10-CM tabular list: L00–L99 (Diseases of the Skin and Subcutaneous Tissue).

L13Not billable, use a more specific code below

Other bullous disorders

In Bullous disorders (L10-L14), chapter 12: Diseases of the Skin and Subcutaneous Tissue

4 billable codes under L13: none are a CC or MCC; none map to an HCC.

Instructional notes

Also applies, from Bullous disorders (L10-L14)

These notes sit on L10-L14 and apply to every code under it, including L13.

Excludes1: not coded here, use a different code

benign familial pemphigus [Hailey-Hailey] (Q82.8)
staphylococcal scalded skin syndrome (L00)
toxic epidermal necrolysis [Lyell] (L51.2)

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 assigning pressure ulcer codes by site and stage, including unstageable, healing, healed, and progressing ulcers, and coding healing or progressing non-pressure chronic ulcers.

Pressure ulcer stage codes (page 58)
Non-Pressure Chronic Ulcers (page 60)

Read Section I.C.12 (page 58)

All codes under L13

L13 can't be used on a claim. Pick a billable code below; grey headings group them.

L13 MS-DRGs

As the principal diagnosis, the billable codes under L13 group to MS-DRG 595, 596, 606, or 607 (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.

DRG 595 Major Skin Disorders with MCC (2 of 4 codes)
DRG 596 Major Skin Disorders without MCC (2 of 4 codes)
DRG 606 Minor Skin Disorders with MCC (2 of 4 codes)
DRG 607 Minor Skin Disorders without MCC (2 of 4 codes)

About the condition

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

Skin Conditions

Your skin is your body's largest organ. It covers the entire outside of your body. There are many ways that your skin protects your body and helps keep you healthy. For example, it:

Code history

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