H70.89
Other mastoiditis and related conditions
H70.89 is a non-billable ICD-10-CM code header for other mastoiditis and related conditions. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are H70.891 Other mastoiditis and related conditions, right ear; H70.892 Other mastoiditis and related conditions, left ear; H70.893 Other mastoiditis and related conditions, bilateral and H70.899 Other mastoiditis and related conditions, unspecified ear. Its coding notes include 2 Excludes1 entries and 8 Excludes2 entries.
Excludes1
Not coded here. The listed conditions generally should not be reported together.
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
Also from chapter/block level (8 notes)
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Notes
Also from chapter/block level (1 note)
- Use an external cause code following the code for the ear condition, if applicable, to identify the cause of the ear condition
Alphabetic Index terms
Terms the official Alphabetic Index lists for this code. 1 entry