Index to Diseases and Injuries

Tonsillitis (acute) (catarrhal) (croupous) (follicular) (gangrenous) (infective) (lacunar) (lingual) (malignant) (membranous) (parenchymatous) (phlegmonous) (pseudomembranous) (purulent) (septic) (subacute) (suppurative) (toxic) (ulcerative) (vesicular) (viral)

Index code: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

Use the index to find a code, then confirm it in the Tabular List before assigning it. A code ending in a dash is incomplete, and a code in [brackets] is a manifestation code reported after the underlying condition. Search the whole index.

Frequently asked questions

What is the ICD-10-CM code for Tonsillitis?

The ICD-10-CM Alphabetic Index directs "Tonsillitis" to J03.90. Subterms below it may lead to a more specific code. Always confirm the code in the Tabular List before assigning it.

ICD-10-CM Index to Diseases and Injuries maintained by CDC/NCHS (public domain), from the CMS FY2027 release.