MCMCB Pro
H70

H70Mastoiditis and related conditions

Non-billable headerICD-10-CM

H70 is a non-billable header ICD-10-CM code for mastoiditis and related conditions. It cannot be billed on its own: choose one of the more specific child codes below.

Risk adjustment

H70 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Code to one of these instead H70

5 child codes. Green means billable.

Questions about H70

Is H70 a billable ICD-10-CM code?
No. H70 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does H70 sit in the tabular list?
Diseases of the ear and mastoid process (H60-H95), in the block Diseases of middle ear and mastoid (H65-H75).
ICD-10-CMFY2026-Apr· effective April 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.