ICD-10-CM Alphabetic Index · FY 2026 19 Entries
Chlamydia in the ICD-10-CM Index ICD-10-CM
The main term Chlamydia, chlamydial carries 19 index entries pointing to 13 ICD-10-CM codes. The default entry is A74.9, 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
19
Index Entries
13
Codes Referenced
A74.9
Default Code
C
Letter
19 of 19 shown
ICD-10-CM
Index Entries Under Chlamydia 19 entries · 13 codes
Chlamydia, chlamydial A74.9
cervicitis A56.09
conjunctivitis A74.0
cystitis A56.01
endometritis A56.11
epididymitis A56.19
female
pelvic inflammatory disease A56.11
pelviperitonitis A56.11
orchitis A56.19
peritonitis A74.81
pharyngitis A56.4
proctitis A56.3
psittaci (infection) A70
salpingitis A56.11
sexually-transmitted infection NEC A56.8
specified NEC A74.89
urethritis A56.01
vulvovaginitis A56.02
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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.
