DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

R64 diagnosis code · Billable category · FY2027

R64 Cachexia

  • Billable
  • CC
  • POA reported

R64 ICD-10 code: a billable diagnosis code in FY2027; the category has no subdivisions.

Where it sits

  1. Chapter 18 Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)
  2. R50-R69 General symptoms and signs (R50-R69)
  3. R64 Cachexia
CC / MCC
CC
MS-DRG
947-948
HCC V28
–
POA
Reported
Code Editor
–
Index entries
6

Instructions

At R64

Excludes1

  • abnormal weight loss (R63.4) R63.4
  • cachexia due to underlying condition (E88.A) E88.A
  • nutritional marasmus (E41) E41

Notes that also apply

Chapter 18 instructions (Notes 9, Excludes2 4): printed on the chapter 18 page.

Index entries

  • Cachexia → R64
  • Emaciation → R64
  • Inanition → R64
  • Cachexiacancerous → R64
  • Cachexiamalignant → R64
  • Cachexiapulmonary → R64

NCHS Alphabetic Index. Index first, then the Tabular List.

Medicare grouping and edits

CMS files for R64
CC / MCCCC
PDX exclusion list1562 (40 codes)
Appendix BMDC 23 Factors Influencing Health Status and Other Contacts with Health Services, MS-DRG 947-948 (Signs and Symptoms with MCC…)
Code Editor–
POAReported
HCC V28–

CC as a secondary diagnosis, not when the principal diagnosis is on its PDX exclusion list.

CMS: MS-DRG v44 (Appendix B, C), MCE v44, POA list FY2027, 2027 Initial ICD-10-CM Mappings. What the rows mean.

Hierarchy