ICD-10-CM > R00-R99 > R20-R23 R20-R23 Symptoms and signs involving the skin and subcutaneous tissue Type 2 Excludes symptoms relating to breast (N64.4-N64.5) Codes R20Disturbances of skin sensationR21Rash and other nonspecific skin eruptionR22Localized swelling, mass and lump of skin and subcutaneous tissueR23Other skin changes