H70 — Mastoiditis and related conditions
Not billable
Is H70 billable?
No — H70 is a non-billable header code. H70 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 40 billable codes beneath H70.
Billable codes under this header
- H70.10Chronic mastoiditis, unspecified ear
- H70.11Chronic mastoiditis, right ear
- H70.12Chronic mastoiditis, left ear
- H70.13Chronic mastoiditis, bilateral
- H70.90Unspecified mastoiditis, unspecified ear
- H70.91Unspecified mastoiditis, right ear
- H70.92Unspecified mastoiditis, left ear
- H70.93Unspecified mastoiditis, bilateral
- 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
- H70.201Unspecified petrositis, right ear
- H70.202Unspecified petrositis, left ear
- H70.203Unspecified petrositis, bilateral
- H70.209Unspecified petrositis, unspecified ear
- H70.211Acute petrositis, right ear
- H70.212Acute petrositis, left ear
- H70.213Acute petrositis, bilateral
- H70.219Acute petrositis, unspecified ear
- H70.221Chronic petrositis, right ear
- H70.222Chronic petrositis, left ear
- H70.223Chronic petrositis, bilateral
- H70.229Chronic petrositis, unspecified ear
- H70.811Postauricular fistula, right ear
- H70.812Postauricular fistula, left ear
- H70.813Postauricular fistula, bilateral
- H70.819Postauricular fistula, unspecified ear
- H70.891Other mastoiditis and related conditions, right ear
- H70.892Other mastoiditis and related conditions, left ear
- H70.893Other mastoiditis and related conditions, bilateral
- H70.899Other mastoiditis and related conditions, unspecified ear
H70 at a glance
| Code | H70 |
|---|---|
| Description | Mastoiditis and related conditions |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Excludes2 — not included here — inherited from Chapter 8
The conditions below are not part of H70, but a patient may have both at the same time. When documentation supports it, H70 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? (5)
How long has H70 existed?
H70 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.