MCMedicalCodingSoftware
J03.9

J03.9: Acute tonsillitis, unspecified

Non-billable headerICD-10-CM

J03.9 is a non-billable header ICD-10-CM code for acute tonsillitis, unspecified. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1: never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

  • Follicular tonsillitis (acute)
  • Gangrenous tonsillitis (acute)
  • Infective tonsillitis (acute)
  • Tonsillitis (acute) NOS
  • Ulcerative tonsillitis (acute)

Excludes1 inherited from the categories above J03.9

A category’s note binds every code beneath it.

Written on J03: Acute tonsillitis

  • acute sore throat (J02.-)
  • hypertrophy of tonsils (J35.1)
  • peritonsillar abscess (J36)
  • sore throat NOS (J02.9)
  • streptococcal sore throat (J02.0)

Excludes2 inherited from the categories above J03.9

Not part of this code, but both may be coded when both are present.

Written on J03: Acute tonsillitis

  • chronic tonsillitis (J35.0)

Other codes that can never be billed with J03.9

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • J36Peritonsillar abscess

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead J03.9

2 child codes. Green means billable.

Other codes under J03

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.