`J35.03` Chronic tonsillitis and adenoiditis

Billable ICD-10-CM code, FY2026.

MS-DRG index

Defines the logic of DRG(s) 011-013 in MDC PRE.

Type 1 Excludes: J35.3 Hypertrophy of tonsils with hypertrophy of adenoids ("hypertrophy of tonsils and adenoids with tonsillitis and adenoiditis (J35.03)")

Type 2 Excludes: J03 Acute tonsillitis ("chronic tonsillitis (J35.0)")
Type 1 Excludes: J35.1 Hypertrophy of tonsils ("hypertrophy of tonsils with tonsillitis (J35.0-)")
Type 1 Excludes: J35.2 Hypertrophy of adenoids ("hypertrophy of adenoids with adenoiditis (J35.0-)")
Type 1 Excludes: J36 Peritonsillar abscess ("chronic tonsillitis (J35.0)")

Adenoiditis (chronic) › with tonsillitis
Infection, infected, infective (opportunistic) › lymphoid tissue, base of tongue or posterior pharynx, NEC (chronic)
Infection, infected, infective (opportunistic) › pharynx › posterior, lymphoid (chronic)
Septic › tonsils, chronic › with adenoiditis
Tonsillitis (acute) (catarrhal) (croupous) (follicular) (gangrenous) (infective) (lacunar) (lingual) (malignant) (membranous) (parenchymatous) (phlegmonous) (pseudomembranous) (purulent) (septic) (subacute) (suppurative) (toxic) (ulcerative) (vesicular) (viral) › chronic › with adenoiditis
Tonsillitis (acute) (catarrhal) (croupous) (follicular) (gangrenous) (infective) (lacunar) (lingual) (malignant) (membranous) (parenchymatous) (phlegmonous) (pseudomembranous) (purulent) (septic) (subacute) (suppurative) (toxic) (ulcerative) (vesicular) (viral) › hypertrophic › with adenoiditis