R20-R23

Non-Billable
ChapterR00–R99
Rankblock
Official Description

Symptoms and signs involving the skin and subcutaneous tissue (R20-R23)

Metadata & Insights
  • •2026 ICD-10-CM Edition - Effective October 1, 2025.
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 18: Symptoms, Signs and Abnormal Clinical and Laboratory Findings (R00-R99).

CH18 Parent Instructions

Excludes2(Not included here)
  • abnormal findings on antenatal screening of mother (O28.-)
  • certain conditions originating in the perinatal period (P04-P96)
  • signs and symptoms classified in the body system chapters
  • signs and symptoms of breast (N63, N64.5)

Instructional Notes

Excludes2(Not included here)

Clinical Hierarchy

CH18Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)
R20-R23Symptoms and signs involving the skin and subcutaneous tissue (R20-R23)
R20Disturbances of skin sensation
R21Rash and other nonspecific skin eruption
R22Localized swelling, mass and lump of skin and subcutaneous tissue
R23Other skin changes

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to R20-R23:

chapterCH18
Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)
View context instructions

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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