Symptoms and signs involving the skin and subcutaneous tissue
31 codes in this section
About Section R20-R23
Section R20-R23 (R20-R23) covers symptoms and signs involving the skin and subcutaneous tissue. It sits within the Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified chapter (R00-R99). This section contains 31 ICD-10-CM codes, 26 billable diagnoses you can submit on a claim, and 5 non-billable header codes used to organize the hierarchy.
Codes are organized below by 3-character root. Click the root to see all subcodes underneath it, or click any individual code for full coverage data, payer policies, and linked CPT procedures.
Codes in R20-R23
Grouped by 3-character root code. Click any code for full detail.
| R20.0 | Anesthesia of skin | Billable |
| R20.1 | Hypoesthesia of skin | Billable |
| R20.2 | Paresthesia of skin | Billable |
| R20.3 | Hyperesthesia | Billable |
| R20.8 | Other disturbances of skin sensation | Billable |
| R20.9 | Unspecified disturbances of skin sensation | Billable |
| R22.0 | Localized swelling, mass and lump, head | Billable |
| R22.1 | Localized swelling, mass and lump, neck | Billable |
| R22.2 | Localized swelling, mass and lump, trunk | Billable |
| R22.3 | Localized swelling, mass and lump, upper limb | Header |
| R22.30 | Localized swelling, mass and lump, unspecified upper limb | Billable |
| R22.31 | Localized swelling, mass and lump, right upper limb | Billable |
| R22.32 | Localized swelling, mass and lump, left upper limb | Billable |
| R22.33 | Localized swelling, mass and lump, upper limb, bilateral | Billable |
| R22.4 | Localized swelling, mass and lump, lower limb | Header |
| R22.40 | Localized swelling, mass and lump, unspecified lower limb | Billable |
| R22.41 | Localized swelling, mass and lump, right lower limb | Billable |
| R22.42 | Localized swelling, mass and lump, left lower limb | Billable |
| R22.43 | Localized swelling, mass and lump, lower limb, bilateral | Billable |
| R22.9 | Localized swelling, mass and lump, unspecified | Billable |
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on July 16, 2026.
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