DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

K23 diagnosis code · Billable category · FY2027

K23 Disorders of esophagus in diseases classified elsewhere

  • Billable
  • Not CC/MCC
  • POA reported

K23 ICD-10 code: a billable diagnosis code in FY2027; the category has no subdivisions.

Where it sits

  1. Chapter 11 Diseases of the digestive system (K00-K95)
  2. K20-K31 Diseases of esophagus, stomach and duodenum (K20-K31)
  3. K23 Disorders of esophagus in diseases classified elsewhere
CC / MCC
Neither
MS-DRG
391-392
HCC V28
–
POA
Reported
Code Editor
Manifestation
Index entries
2

Instructions

At K23

Excludes1

  • late syphilis (A52.79) A52.79
  • megaesophagus due to Chagas' disease (B57.31) B57.31
  • tuberculosis (A18.83) A18.83

Code first

  • underlying disease, such as:
  • congenital syphilis (A50.5) A50.5

Notes that also apply

Block K20-K31 instructions (Excludes2 1): printed on the block page.

Chapter 11 instructions (Excludes2 8): printed on the chapter 11 page.

Index entries

  • Stenosis, stenotic (cicatricial)esophagussyphiliticcongenital → A50.59 [K23]
  • Strictureesophagussyphiliticcongenital → A50.59 [K23]

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

Medicare grouping and edits

CMS files for K23
CC / MCCNeither
Appendix BMDC 06 Diseases and Disorders of the Digestive System, MS-DRG 391-392 (Esophagitis, Gastroenteritis and Miscellaneous Digestive Disorders with MCC…)
Code EditorManifestation code: not allowed as principal diagnosis
POAReported
HCC V28–

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

Hierarchy