ICD-10-CM category
R22 Localized swelling, mass and lump of skin and subcutaneous tissue
R22 is a category, not a billable code. Report one of the 12 complete codes below.
Codes in R22
- R22.0Localized swelling, mass and lump, head
- R22.1Localized swelling, mass and lump, neck
- R22.2Localized swelling, mass and lump, trunk
- R22.30Localized swelling, mass and lump, unspecified upper limb
- R22.31Localized swelling, mass and lump, right upper limb
- R22.32Localized swelling, mass and lump, left upper limb
- R22.33Localized swelling, mass and lump, upper limb, bilateral
- R22.40Localized swelling, mass and lump, unspecified lower limb
- R22.41Localized swelling, mass and lump, right lower limb
- R22.42Localized swelling, mass and lump, left lower limb
- R22.43Localized swelling, mass and lump, lower limb, bilateral
- R22.9Localized swelling, mass and lump, unspecified
Outside the US? R22 in the international WHO ICD-10 lists its inclusion and exclusion notes.
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ICD-10-CM is developed by the National Center for Health Statistics (NCHS), Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, and is based on the WHO ICD-10. Codes and titles are reproduced unchanged from the FY2026 code list (effective 1 October 2025). Their use here does not imply endorsement by CDC, HHS or the U.S. Government. Changes effective on or after 1 October 2026 may not be reflected yet; check the current release at cdc.gov or cms.gov before submitting claims.
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