R22: Localized swelling, mass and lump of skin and subcutaneous tissue

Codes under R22 (Localized swelling, mass and lump of skin and subcutaneous tissue). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.

Code	Description	Billable
R22.0	Localized swelling, mass and lump, head	✓
R22.1	Localized swelling, mass and lump, neck	✓
R22.2	Localized swelling, mass and lump, trunk	✓
R22.3	Localized swelling, mass and lump, upper limb	—
R22.4	Localized swelling, mass and lump, lower limb	—
R22.9	Localized swelling, mass and lump, unspecified	✓
R22.30	Localized swelling, mass and lump, unspecified upper limb	✓
R22.31	Localized swelling, mass and lump, right upper limb	✓
R22.32	Localized swelling, mass and lump, left upper limb	✓
R22.33	Localized swelling, mass and lump, upper limb, bilateral	✓
R22.40	Localized swelling, mass and lump, unspecified lower limb	✓
R22.41	Localized swelling, mass and lump, right lower limb	✓
R22.42	Localized swelling, mass and lump, left lower limb	✓
R22.43	Localized swelling, mass and lump, lower limb, bilateral	✓

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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.

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