H70.012 (Subperiosteal abscess of mastoid, left ear) compared with H70.019 (Subperiosteal abscess of mastoid, unspecified ear), from the official CMS tabular data. H70.012 and H70.019 code the same condition on opposite sides. MedCoder-derived
Same condition; these differ only in which side is documented.
These codes share a category and title and differ only in the side affected. The documentation decides which applies, and a bilateral code is reported only where the code set provides one.
Source: ICD-10-CM tabular list (laterality variant derived from the code title)
Same condition, opposite side. H70.012 and H70.019 name the same condition on opposite sides of the body.
Same category and title, differing only in which side is affected — the documentation decides which one applies, and a bilateral code is reported only where the code set provides one.
| H70.012Subperiosteal abscess of mastoid, left ear | H70.019Subperiosteal abscess of mastoid, unspecified ear | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | H60-H95 — Diseases of the ear and mastoid process | H60-H95 — Diseases of the ear and mastoid process |
| Definition | Subperiosteal abscess of mastoid, left ear is a billable ICD-10-CM diagnosis code (H70.012). | Subperiosteal abscess of mastoid, unspecified ear is a billable ICD-10-CM diagnosis code (H70.019). |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources