J35.9
✓ Billable
Chronic disease of tonsils and adenoids, unspecified
ICD-10-CM · FY2026 · Diseases of the Respiratory System
Code
J35.9
System
ICD-10-CM
Billable
Yes — valid for submission
Effective
FY2026
Chapter
Diseases of the Respiratory System
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code J35.9?
ICD-10-CM code J35.9 represents Chronic disease of tonsils and adenoids, unspecified. It is a billable diagnosis code in the Diseases of the Respiratory System chapter, effective October 1, 2025 – September 30, 2026.
Is J35.9 billable?
Yes. J35.9 is a valid billable ICD-10-CM code for insurance claims and clinical documentation.
What chapter is J35.9 in?
J35.9 belongs to the Diseases of the Respiratory System chapter (J00–J99) of ICD-10-CM.
Related codes in the J35 category
J35
Chronic diseases of tonsils and adenoids
Non-billable
J35.0
Chronic tonsillitis and adenoiditis
Non-billable
J35.1
Hypertrophy of tonsils
Billable
J35.2
Hypertrophy of adenoids
Billable
J35.3
Hypertrophy of tonsils with hypertrophy of adenoids
Billable
J35.8
Other chronic diseases of tonsils and adenoids
Billable
J35.01
Chronic tonsillitis
Billable
J35.02
Chronic adenoiditis
Billable
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