Free Medical Coding > ICD10 CM > 2024 ICD-10-CM Codes > 2024 ICD-10-CM Codes R00-R99 – Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99) > 2024 ICD-10-CM Codes R20-R23 – Symptoms and signs involving the skin and subcutaneous tissue (R20-R23) > 2024 ICD-10-CM Codes R22 – Localized swelling, mass and lump of skin and subcutaneous tissue (R22) > 2024 ICD-10-CM Codes R22.3 – Localized swelling, mass and lump, upper limb (R22.3)