H70.0 — Acute mastoiditis
Not billable
Is H70.0 billable?
No — H70.0 is a non-billable header code. H70.0 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 12 billable codes beneath H70.0.
Billable codes under this header
- H70.001Acute mastoiditis without complications, right ear
- H70.002Acute mastoiditis without complications, left ear
- H70.003Acute mastoiditis without complications, bilateral
- H70.009Acute mastoiditis without complications, unspecified ear
- H70.011Subperiosteal abscess of mastoid, right ear
- H70.012Subperiosteal abscess of mastoid, left ear
- H70.013Subperiosteal abscess of mastoid, bilateral
- H70.019Subperiosteal abscess of mastoid, unspecified ear
- H70.091Acute mastoiditis with other complications, right ear
- H70.092Acute mastoiditis with other complications, left ear
- H70.093Acute mastoiditis with other complications, bilateral
- H70.099Acute mastoiditis with other complications, unspecified ear
H70.0 at a glance
| Code | H70.0 |
|---|---|
| Description | Acute mastoiditis |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Inclusion terms
Alternative wording in documentation that is classified to H70.0.
- Abscess of mastoid
- Empyema of mastoid
Excludes2 — not included here — inherited from Chapter 8
The conditions below are not part of H70.0, but a patient may have both at the same time. When documentation supports it, H70.0 and the excluded code may both be reported.
- 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)
What codes fall under H70.0? (3)
How long has H70.0 existed?
H70.0 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.