ICD-10-CM 2027
ICD-10 code for neck mass
From the official ICD-10-CM alphabetic index entry “Mass › neck”. Page updated September 29, 2026.
About coding neck mass
The ICD-10-CM code for neck mass is R22.1 (Localized swelling, mass and lump, neck).
Within R22 (localized swelling, mass and lump of skin and subcutaneous tissue), R22.1 is specifically for localized swelling, mass and lump, neck. Related codes cover head (R22.0), trunk (R22.2), upper limb (R22.3), lower limb (R22.4) and unspecified (R22.9).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 606 (Minor Skin Disorders with MCC, relative weight 1.5728) and DRG 607 (Minor Skin Disorders without MCC, relative weight 0.8772), in MDC 09 (Diseases and Disorders of the Skin, Subcutaneous Tissue and Breast), 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 mass ICD-10 codes
What is the ICD-10 code for neck mass?
- R22.1 — Localized swelling, mass and lump, neck.
Is R22.1 billable?
- Yes. R22.1 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can R22.1 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict R22.1 as a principal diagnosis.
Is R22.1 a CC or MCC?
- No. R22.1 is neither a CC nor an MCC under MS-DRG v44.0.