ICD-10 Code H70.019 - Subperiosteal abscess of mastoid, unspecified ear

ICD-10-CM Diagnosis Code H70.019

Diagnosis Code: H70.019 (Raw: H70019)

Description: Subperiosteal abscess of mastoid, unspecified ear

Classification: International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM)

Fiscal Year: 2026

CMS Section 111 Status: Valid for reporting.

Overview & Clinical Details

ICD-10-CM code H70.019 is designated for Subperiosteal abscess of mastoid, unspecified ear. In medical documentation and insurance billing, this code is utilized to specify medical diagnosis for patient records, reimbursement workflows, and compliance under CMS Section 111 mandatory insurer reporting guidelines.