R22.42 Localized swelling, mass and lump, left lower limb

Billable ICD-10-CM code, FY2026.

Applies from R22 Localized swelling, mass and lump of skin and subcutaneous tissue

Includes

• subcutaneous nodules (localized)(superficial)

Excludes1 (never code together)

• abnormal findings on diagnostic imaging (R90-R93)
• edema (R60.-)
• enlarged lymph nodes (R59.-)
• localized adiposity (E65)
• swelling of joint (M25.4-)

MS-DRG index

Defines the logic of DRG(s) 606-607 in MDC 09.

Approximate ICD-9-CM (GEMs)

• 782.2 Localized superficial swelling, mass, or lump (approximate)

Nearby codes

• R22.32 Localized swelling, mass and lump, left upper limb
• R22.33 Localized swelling, mass and lump, upper limb, bilateral
• R22.4 Localized swelling, mass and lump, lower limb
• 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 (this code)
• R22.43 Localized swelling, mass and lump, lower limb, bilateral
• R22.9 Localized swelling, mass and lump, unspecified