H70.899
Other mastoiditis and related conditions, unspecified ear
BillableComplete code, valid to report
H70.899 (also written H70899) is a billable ICD-10-CM diagnosis code for other mastoiditis and related conditions, unspecified ear. It is part of the FY2027 code set, effective October 1, 2026. It is one of the 40 codes in category H70 (Mastoiditis and related conditions). 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)
Inherited from Chapter 8 Diseases of the ear and mastoid process
- 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)
Inherited from Chapter 8 Diseases of the ear and mastoid process
- Use an external cause code following the code for the ear condition, if applicable, to identify the cause of the ear condition