ICD-10-CM Alphabetic Index · FY 2026 26 Entries
Irritable in the ICD-10-CM Index ICD-10-CM
The main term Irritable, irritability carries 26 index entries pointing to 14 ICD-10-CM codes. The default entry is R45.4, 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
26
Index Entries
14
Codes Referenced
R45.4
Default Code
I
Letter
26 of 26 shown
ICD-10-CM
Index Entries Under Irritable 26 entries · 14 codes
Irritable, irritability R45.4
bladder N32.89
bowel (syndrome) K58.9
with
constipation K58.1
diarrhea K58.0
mixed K58.2
psychogenic F45.8
specified NEC K58.8
without diarrhea K58.9
bronchial see Bronchitis
cerebral, in newborn P91.3
colon K58.9 see also Irritable, bowel
with diarrhea K58.0
psychogenic F45.8
duodenum K59.89
heart (psychogenic) F45.8
hip see Derangement, joint, specified type NEC, hip
ileum K59.89
infant R68.12
jejunum K59.89
rectum K59.89
stomach K31.89
psychogenic F45.8
sympathetic G90.89
urethra N36.8
The info icon previews the code's description and billable status; the code link opens its full page with all notations.
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.
