J35.1

ICD-10Billable

Hypertrophy of tonsils

Official ICD-10-CM descriptor (FY2026)

Hypertrophy of tonsils

J35.1 is valid for submission on a claim — CMS flags it as a billable, specific code.

Inclusion terms

Enlargement of tonsils

Excludes1

Not coded here. An Excludes1 code should never be reported at the same time as the code above it.

hypertrophy of tonsils with tonsillitis (J35.0-)

Related codes in J35

Where this code sits

Chapter: 10. Diseases of the respiratory system (J00-J99)
Block: Other diseases of upper respiratory tract (J30-J39)
Parent code: J35

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Source

ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.