Symptoms and signs involving the skin and subcutaneous tissue (R20-R23)
R22: Localized swelling, mass and lump of skin and subcutaneous tissue

includes
subcutaneous nodules (localized)(superficial)

excludes1
abnormal findings on diagnostic imaging (R90-R93)
edema (R60.-)
enlarged lymph nodes (R59.-)
localized adiposity (E65)
swelling of joint (M25.4-)
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

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