ICD-10-CM Alphabetic Index · FY 2027 15 Entries

Tonsillitis in the ICD-10-CM Index ICD-10-CM

The main term Tonsillitis (acute) (catarrhal) (croupous) (follicular) (gangrenous) (infective) (lacunar) (lingual) (malignant) (membranous) (parenchymatous) (phlegmonous) (pseudomembranous) (purulent) (septic) (subacute) (suppurative) (toxic) (ulcerative) (vesicular) (viral) carries 15 index entries pointing to 11 ICD-10-CM codes. The default entry is J03.90, 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 2027 index fileEffective Oct 1, 2026 – Sep 30, 2027
15
Index Entries
11
Codes Referenced
J03.90
Default Code
T
Letter
15 of 15 shown
ICD-10-CM

Index Entries Under Tonsillitis 15 entries · 11 codes

Tonsillitis (acute) (catarrhal) (croupous) (follicular) (gangrenous) (infective) (lacunar) (lingual) (malignant) (membranous) (parenchymatous) (phlegmonous) (pseudomembranous) (purulent) (septic) (subacute) (suppurative) (toxic) (ulcerative) (vesicular) (viral) J03.90
chronic J35.01
with adenoiditis J35.03
diphtheritic A36.0
hypertrophic J35.01
with adenoiditis J35.03
recurrent J03.91
specified organism NEC J03.80
recurrent J03.81
staphylococcal J03.80
recurrent J03.81
streptococcal J03.00
recurrent J03.01
tuberculous A15.8
Vincent's A69.1

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Related Index Terms

All index terms starting with TIndex to Diseases and InjuriesICD-10-CM Code Lookup

Source: Centers for Medicare & Medicaid Services, FY 2027 ICD-10-CM Index to Diseases and Injuries release files, effective October 1, 2026 through September 30, 2027.