ICD-10-CM
ICD-10 code for Weight loss: R63.4
The closest CDC title for "Weight loss" is R63.4, Abnormal weight loss. R63.4 is a billable code.
Source: CDC ICD-10-CM FY2027 order file dated June 16, 2026. Publisher page
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Codes under R63, then other CDC titles that name abnormal weight loss
A header groups codes and is not billed. A billable code is one you can report.
- R63Symptoms and signs concerning food and fluid intakeHeader
- R63.0AnorexiaBillable
- R63.1PolydipsiaBillable
- R63.2PolyphagiaBillable
- R63.3Feeding difficultiesHeader
- R63.30Feeding difficulties, unspecifiedBillable
- R63.31Pediatric feeding disorder, acuteBillable
- R63.32Pediatric feeding disorder, chronicBillable
- R63.39Other feeding difficultiesBillable
- R63.4Abnormal weight lossBillable
- R63.5Abnormal weight gainBillable
- R63.6UnderweightBillable
- R63.8Other symptoms and signs concerning food and fluid intakeBillable
Excludes1
Excludes1 means these codes are not reported together.
From R63. A note on a category applies to every code under it.
Related conditions
Related pages
- R63.4 code detailsNotes, nearby codes, CMS-HCC group
- Category R63Every code under it
- Chapter 18Symptoms, signs and abnormal clinical findings
- ICD-10 codes by conditionA to Z
- Check a list of ICD-10 codes
- Denial code CO-11Diagnosis does not support the procedure
- Denial code CO-146Diagnosis invalid for the date of service
- HCPCS Level II code lookup
Questions
What is the ICD-10 code for Weight loss?
The closest CDC title for "Weight loss" is R63.4, Abnormal weight loss. R63.4 is a billable code.
Is R63.4 billable?
Yes. R63.4 is a billable code in the FY2027 ICD-10-CM file. Use a more specific code when the record documents one.
What documentation notes apply to R63.4?
The CDC tabular list gives 1 Excludes1 note (not coded together) for R63.4 and the categories above it. They are listed on this page.
What chapter is R63.4 in?
Chapter 18. Symptoms, signs and abnormal clinical findings.
When do ICD-10-CM codes change?
Every October 1, with the new fiscal year file. Some years add April 1 updates. This page uses the FY2027 file, effective October 1, 2026.