Is ICD-10-CM code R23 billable?

No, R23 (Other skin changes) is a non-billable ICD-10-CM code. It must be coded to a more specific subcategory before it can be used for reimbursement.

What chapter does ICD-10-CM code R23 belong to?

R23 belongs to Chapter 18 of the ICD-10-CM tabular list: R00–R99 (Symptoms, Signs and Abnormal Clinical and Laboratory Findings).

R23Not billable, use a more specific code below

Other skin changes

In Symptoms and signs involving the skin and subcutaneous tissue (R20-R23), chapter 18: Symptoms, Signs and Abnormal Clinical and Laboratory Findings

7 billable codes under R23: none are a CC or MCC; none map to an HCC.

Instructional notes

Also applies, from Symptoms and signs involving the skin and subcutaneous tissue (R20-R23)

These notes sit on R20-R23 and apply to every code under it, including R23.

Excludes2: not included here, code separately if applicable

symptoms relating to breast (N64.4-N64.5)

Official coding guidelines

From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.

Covers when to report symptom, sign, and abnormal finding codes (R00-R99), plus specific rules for falls, coma scales, non-infectious SIRS, death NOS, and NIHSS scores.

Use of symptom codes (page 75)
Use of a symptom code with a definitive diagnosis code (page 75)
Combination codes that include symptoms (page 75)
Repeated falls (page 76)
Coma (page 76)
Functional quadriplegia (page 76)
SIRS due to Non-Infectious Process (page 77)
Death NOS (page 77)

Read Section I.C.18 (page 75), 1 more topics

All codes under R23

R23 can't be used on a claim. Pick a billable code below; grey headings group them.

R23 MS-DRGs

As the principal diagnosis, the billable codes under R23 group to MS-DRG 606, 607, 947, 948, or 813 (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.

DRG 606 Minor Skin Disorders with MCC (3 of 7 codes)
DRG 607 Minor Skin Disorders without MCC (3 of 7 codes)
DRG 947 Signs and Symptoms with MCC (3 of 7 codes)
DRG 948 Signs and Symptoms without MCC (3 of 7 codes)
DRG 813 Coagulation Disorders (1 of 7 codes)

About the condition

Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.

Skin Conditions

Your skin is your body's largest organ. It covers the entire outside of your body. There are many ways that your skin protects your body and helps keep you healthy. For example, it:

Code history

Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.