ICD-10-CM Alphabetic Index · FY 2026 84 Entries
Diarrhea in the ICD-10-CM Index ICD-10-CM
The main term Diarrhea, diarrheal (disease) (infantile) (inflammatory) carries 84 index entries pointing to 45 ICD-10-CM codes. The default entry is R19.7, 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
84
Index Entries
45
Codes Referenced
R19.7
Default Code
D
Letter
84 of 84 shown
ICD-10-CM
Index Entries Under Diarrhea 84 entries · 45 codes
Diarrhea, diarrheal (disease) (infantile) (inflammatory) R19.7
achlorhydric K31.83
allergic K52.29
due to
colitis see Colitis, allergic
enteritis see Enteritis, allergic
amebic A06.0 see also Amebiasis
with abscess see Abscess, amebic
acute A06.0
chronic A06.1
nondysenteric A06.2
bacillary see Dysentery, bacillary
balantidial A07.0
cachectic NEC K52.89
Chilomastix A07.8
choleriformis A00.1
chronic (noninfectious) K52.9
coccidial A07.3
Cochin-China K90.1
strongyloidiasis B78.0
Dientamoeba A07.8
dietetic K52.29 see also Diarrhea, allergic
drug-induced K52.1
due to
bacteria A04.9
specified NEC A04.8
Campylobacter A04.5
Capillaria philippinensis B81.1
Clostridium difficile
not specified as recurrent A04.72
recurrent A04.71
Clostridium perfringens (C) (F) A04.8
Cryptosporidium A07.2
drugs K52.1
Escherichia coli A04.4
enteroaggregative A04.4
enterohemorrhagic A04.3
enteroinvasive A04.2
enteropathogenic A04.0
enterotoxigenic A04.1
specified NEC A04.4
food hypersensitivity K52.29 see also Diarrhea, allergic
Necator americanus B76.1
S. japonicum B65.2
specified organism NEC A08.8
bacterial A04.8
viral A08.39
Staphylococcus A04.8
Trichuris trichiuria B79
virus see Enteritis, viral
Yersinia enterocolitica A04.6
dysenteric A09
endemic A09
epidemic A09
flagellate A07.9
Flexner's (ulcerative) A03.1
functional K59.1
following gastrointestinal surgery K91.89
psychogenic F45.8
Giardia lamblia A07.1
giardial A07.1
hill K90.1
infectious A09
malarial see Malaria
mite B88.09
mycotic NEC B49
neonatal (noninfectious) P78.3
nervous F45.8
neurogenic K59.1
noninfectious K52.9
postgastrectomy K91.1
postvagotomy K91.1
protozoal A07.9
specified NEC A07.8
psychogenic F45.8
specified
bacterium NEC A04.8
virus NEC A08.39
strongyloidiasis B78.0
toxic K52.1
trichomonal A07.8
tropical K90.1
tuberculous A18.32
viral see Enteritis, viral
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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.
