Symptoms and signs involving the skin and subcutaneous tissue (R20-R23) ICD-10-CM
The R20–R23 section covers symptoms and signs involving the skin and subcutaneous tissue with 31 ICD-10-CM diagnosis codes, of which 26 are billable in fiscal year 2027. The section is organized into the 4 code ranges listed below.
Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
Code Ranges in This Section 4 ranges · 31 codes
The info icon previews the code ranges inside each row and its instructional notations from the official Tabular List.
About the R20–R23 Code Range
These symptoms include changes in skin sensation, rashes, localized swelling or lumps, and other changes in the skin or tissue beneath it.
R20 separates loss, reduction, increase, and other changes in skin sensation. R21 identifies rashes and other nonspecific skin eruptions. R22 groups localized swelling, masses, and lumps by location: head, neck, trunk, upper limb, or lower limb. R23 separates skin color changes, spontaneous bruising, texture changes, and other skin changes.
Questions About This Page
How many codes are in the R20-R23 range?
The R20-R23 range contains 31 ICD-10-CM diagnosis codes in FY 2027. 26 of them are billable, and the rest are category headers that organize the section.
What conditions does R20-R23 cover?
The range covers symptoms and signs involving the skin and subcutaneous tissue. The code ranges listed above break it into groups of related conditions, and each one links to its own page with the full code list.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
