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ICD-10-CM 2027

ICD-10 code for neck region cellulitis

L03.221

Cellulitis of neck

✓ Billable / specificCC — complication/comorbidity

From the official ICD-10-CM alphabetic index entry “Cellulitis (diffuse) (phlegmonous) (septic) (suppurative) › neck (region)”. Page updated September 29, 2026.

About coding neck region cellulitis

The ICD-10-CM code for neck region cellulitis is L03.221 (Cellulitis of neck).

Within L03.22 (cellulitis and acute lymphangitis of neck), L03.221 is specifically for cellulitis of neck. Related codes cover acute lymphangitis of neck (L03.222).

As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.

In MS-DRG v44.0, it is part of the grouping logic for DRG 011 (Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with MCC, relative weight 5.6154), DRG 012 (Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with CC, relative weight 4.381), DRG 013 (Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy without CC/MCC, relative weight 2.7307), DRG 573 (Skin Graft for Skin Ulcer or Cellulitis with MCC, relative weight 6.3575), DRG 574 (Skin Graft for Skin Ulcer or Cellulitis with CC, relative weight 3.5674), DRG 575 (Skin Graft for Skin Ulcer or Cellulitis without CC/MCC, relative weight 1.8797) and 4 more, in Pre-MDC, MDC 09 (Diseases and Disorders of the Skin, Subcutaneous Tissue and Breast) and MDC 15 (Newborns and Other Neonates with Conditions Originating in the Perinatal Period), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

Common questions about neck region cellulitis ICD-10 codes

What is the ICD-10 code for neck region cellulitis?

L03.221 — Cellulitis of neck.

Is L03.221 billable?

Yes. L03.221 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can L03.221 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict L03.221 as a principal diagnosis.

Is L03.221 a CC or MCC?

L03.221 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.