Vero
U.S. ICD-10-CM · FY 2027

L03.31A ICD-10-CM Code: Cellulitis of flank

A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.

Code definition

Official description

L03.31A

Cellulitis of flank

ICD-10-CM diagnosis code · United States clinical modification

Classification

Where L03.31A sits

  1. 1

    Chapter 12

    Diseases of the skin and subcutaneous tissue (L00-L99)

  2. 2

    Section

    Infections of the skin and subcutaneous tissue (L00-L08)

  3. 3

    Category L03

    Cellulitis and acute lymphangitis

  4. 4

    Subcategory L03.31

    Cellulitis of trunk

  5. 5

    Code L03.31A

    Cellulitis of flank

Documentation details

Notes for this code

Inclusion terms

No inclusion terms are listed for L03.31A.

Code first

No “code first” instruction is listed for L03.31A.

Use additional code

No “use additional code” instruction is listed for L03.31A.

Excludes1

Conditions that should not be reported together with this code.

No Excludes1 note is listed for L03.31A.

Excludes2

Conditions not included here that may be reported separately when present.

No Excludes2 note is listed for L03.31A.

Transparency

Source and release

Data release

U.S. ICD-10-CM · FY 2027

Effective date

Oct 1, 2026

This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.

Review the CDC/NCHS ICD-10-CM source

Code-specific guidance

Frequently asked questions

What does ICD-10-CM code L03.31A mean?

L03.31A is the FY 2027 U.S. ICD-10-CM code for “Cellulitis of flank.”

Is L03.31A a billable or specific ICD-10-CM code?

Yes. In the FY 2027 reference data used on this page, L03.31A has no child codes and is presented as a billable/specific code. Always confirm the active code set and payer requirements before use.

Where is L03.31A located in ICD-10-CM?

L03.31A is listed in Chapter 12, Diseases of the skin and subcutaneous tissue (L00-L99), within Infections of the skin and subcutaneous tissue (L00-L08) (L00–L08), under category L03, Cellulitis and acute lymphangitis and subcategory L03.31, Cellulitis of trunk.

What coding notes are listed for L03.31A?

No inclusion terms are listed for L03.31A in this reference record. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.

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