ICD-10-CM L03.31A is the diagnosis code for Cellulitis of flank. This code falls under the section "Infections of the skin and subcutaneous tissue" within Chapter 12 — Diseases of the skin and subcutaneous tissue (L00-L99). It is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
Always refer to the official ICD-10-CM Tabular List for complete coding guidelines. Ensure documentation supports the specificity of the code selected. When in doubt, consult a certified medical coder or the latest CMS guidelines.
Understanding where L03.31A sits in the ICD-10-CM classification helps ensure proper coding:
Yes, L03.31A is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
L03.31A is the ICD-10-CM diagnosis code for "Cellulitis of flank". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of L03.31A is L03.31 ("Cellulitis of trunk"). L03.31A provides a more specific classification within this category.
L03.31A is located in Section L00-L08 — "Infections of the skin and subcutaneous tissue" within Chapter 12 of the ICD-10-CM Tabular List.
Use L03.31A when the patients documented diagnosis matches "Cellulitis of flank" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Cellulitis of flank is L03.31A.
Yes, L03.31A can be used as a primary diagnosis code since it is billable and specific.
L03.31A is in Chapter 12 of the ICD-10-CM Tabular List.
Yes, L03.31A is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.