Is ICD-10-CM code L10 billable?

No, L10 (Pemphigus) 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 L10 belong to?

L10 belongs to Chapter 12 of the ICD-10-CM tabular list: L00–L99 (Diseases of the Skin and Subcutaneous Tissue).

L10Not billable, use a more specific code below

Pemphigus

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

9 billable codes under L10: all are a CC; 8 map to HCC 387 (Pemphigus, Pemphigoid, and Other Specified Autoimmune Skin Disorders).A CC or MCC (major CC) is a secondary diagnosis that raises the MS-DRG payment. An HCC counts toward a Medicare Advantage patient's risk score.

Instructional notes

Excludes1: not coded here, use a different code

pemphigus neonatorum (L01.03)

Also applies, from Bullous disorders (L10-L14)

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

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 L10

L10 can't be used on a claim. Pick a billable code below; grey headings group them.

L10 MS-DRGs

As the principal diagnosis, all 9 billable codes under L10 group to MS-DRG 595 or 596 (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.

About the condition

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

Pemphigus

Pemphigus is an autoimmune disorder. If you have it, your immune system attacks healthy cells in your skin and mouth, causing blisters and sores. No one knows the cause. Pemphigus does not spread from person to person. It does not appear to be inherited. But some people's genes put them more at risk for pemphigus.

Code history

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