ICD-10-CM Alphabetic Index · FY 2026 43 Entries
Enterocolitis in the ICD-10-CM Index ICD-10-CM
The main term Enterocolitis carries 43 index entries pointing to 16 ICD-10-CM codes. The default entry is K52.9, the code the bare main term maps to; every indented line below refines the term by site, cause, or type. Verify any candidate code in the Tabular List before using it.
✓ Built from the official CMS FY 2026 index fileEffective Oct 1, 2025 – Sep 30, 2026
43
Index Entries
16
Codes Referenced
K52.9
Default Code
E
Letter
43 of 43 shown
ICD-10-CM
Index Entries Under Enterocolitis 43 entries · 16 codes
Enterocolitis K52.9
due to
Clostridioides difficile
not specified as recurrent A04.72
recurrent A04.71
Clostridium difficile
not specified as recurrent A04.72
recurrent A04.71
fulminant ischemic K55.059 see also Ischemia, intestine, acute
granulomatous see Enteritis, regional
hemorrhagic (acute) K55.059 see also Ischemia, intestine, acute
chronic K55.1
infectious NEC A09
ischemic K55.9
necrotizing K55.30
with
perforation K55.33
pneumatosis K55.32
and perforation K55.33
due to
Clostridioides difficile
not specified as recurrent A04.72
recurrent A04.71
Clostridium difficile
not specified as recurrent A04.72
recurrent A04.71
in non-newborn K55.30
stage 1 (without pneumatosis, without perforation) K55.31
stage 2 (with pneumatosis, without perforation) K55.32
stage 3 (with pneumatosis, with perforation) K55.33
in newborn P77.9
stage 1 (without pneumatosis, without perforation) P77.1
stage 2 (with pneumatosis, without perforation) P77.2
stage 3 (with pneumatosis, with perforation) P77.3
without pneumatosis or perforation K55.31
noninfectious K52.9
newborn see Enterocolitis, necrotizing, in newborn
pseudomembranous (newborn)
not specified as recurrent A04.72
recurrent A04.71
radiation K52.0
newborn see Enterocolitis, necrotizing, in newborn
ulcerative (chronic) see Pancolitis, ulcerative (chronic)
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Related Index Terms
Source: Centers for Medicare & Medicaid Services, FY 2026 ICD-10-CM Index to Diseases and Injuries release files, effective October 1, 2025 through September 30, 2026.
