Is H70.1 a billable code?
No. H70.1 is a header code that groups 4 more specific codes. Use one of the billable codes listed on this page instead.
ICD-10-CM FY2027 diagnosis code
H70.1: Chronic mastoiditis
Header code: not billableValid for dates of service October 1, 2026 to September 30, 2027
H70.1 groups related diagnoses under chronic mastoiditis. It cannot be used on a claim by itself. Choose the billable code below that matches the patient's record.
Billable codes under H70.1
- H70.10Chronic mastoiditis, unspecified ear
- H70.11Chronic mastoiditis, right ear
- H70.12Chronic mastoiditis, left ear
- H70.13Chronic mastoiditis, bilateral
Other codes in H70 Mastoiditis and related conditions
H70.1 questions
What does H70.1 mean?
H70.1 is the ICD-10-CM code for Chronic mastoiditis. It is in chapter 8, Diseases of the ear and mastoid process (H60-H95).
Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.