DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

K67 diagnosis code · Billable category · FY2027

K67 Disorders of peritoneum in infectious diseases classified elsewhere

  • Billable
  • MCC
  • HCC 78
  • POA reported

K67 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. K65-K6A Diseases of peritoneum, retroperitoneum and pelvis (K65-K6A)
  3. K67 Disorders of peritoneum in infectious diseases classified elsewhere
CC / MCC
MCC
MS-DRG
371-373, 791, 793
HCC V28
78
POA
Reported
Code Editor
Manifestation
Index entries
2

Instructions

At K67

Excludes1

  • peritonitis in chlamydia (A74.81) A74.81
  • peritonitis in diphtheria (A36.89) A36.89
  • peritonitis in gonococcal (A54.85) A54.85
  • peritonitis in syphilis (late) (A52.74) A52.74
  • peritonitis in tuberculosis (A18.31) A18.31

Code first

  • underlying disease, such as:
  • congenital syphilis (A50.0) A50.0
  • helminthiasis (B65.0 -B83.9) B65.0 B83.9

Notes that also apply

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

Index entries

  • Peritonitis (adhesive) (bacterial) (fibrinous) (hemorrhagic) (idiopathic) (localized) (perforative) (primary) (with adhesions) (with effusion)syphiliticcongenital (early) → A50.08 [K67]
  • Granulomaperitoneumdue to ova of helminths NOS → B83.9 [K67]

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

Medicare grouping and edits

CMS files for K67
CC / MCCMCC
PDX exclusion list1066 (25 codes)
Appendix BMDC 06 Diseases and Disorders of the Digestive System, MS-DRG 371-373 (Major Gastrointestinal Disorders and Peritoneal Infections with MCC…); MDC 15 Newborns and Other Neonates with Conditions Originating in Perinatal Period, MS-DRG 791 (Prematurity with Major Problems…); MDC 15 Newborns and Other Neonates with Conditions Originating in Perinatal Period, MS-DRG 793 (Full Term Neonate with Major Problems…)
Code EditorManifestation code: not allowed as principal diagnosis
POAReported
HCC V28HCC 78 Intestinal Obstruction/Perforation

MCC 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