J35.0 – Chronic tonsillitis and adenoiditis
ICD-10-CM 2027 diagnosis code · Other diseases of upper respiratory tract
ICD-10-CM code
J35.0
- Code
J35.0(claims format:J350)- Description
- Chronic tonsillitis and adenoiditis
- Billable
- No – use a more specific code below
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 10. Diseases of the respiratory system (J00-J99)
- Block
- J30-J39 Other diseases of upper respiratory tract
- Parent codes
- J35
Billable codes under J35.0
J35.0 is a header code and cannot be used on claims. Choose the most specific code:
- J35.01 – Chronic tonsillitisBillable
- J35.02 – Chronic adenoiditisBillable
- J35.03 – Chronic tonsillitis and adenoiditisBillable
Notes for J35.0
Excludes2 (not included here):
- acute tonsillitis (J03.-)
Related codes in J35
Frequently asked questions
What is ICD-10 code J35.0?
J35.0 is the ICD-10-CM code for chronic tonsillitis and adenoiditis, in the block J30-J39 (Other diseases of upper respiratory tract).
Is J35.0 a billable code?
No. J35.0 is a header code with more specific child codes; report one of the billable codes listed above.
What category does J35.0 belong to?
It belongs to category J35 – Chronic diseases of tonsils and adenoids.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.