ICD-10-CM 2027
ICD-10 code for hearing test
Encounter for examination of ears and hearing without abnormal findings
From the official ICD-10-CM alphabetic index entry “Test, tests, testing (for) › hearing”. Page updated September 29, 2026.
About coding hearing test
The ICD-10-CM code for hearing test is Z01.10 (Encounter for examination of ears and hearing without abnormal findings). The official index lists 3 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on Z01.10.
Within Z01.1, choose Z01.10 (without abnormal findings) only when documentation doesn't support a more specific option: with abnormal findings (Z01.11) and hearing conservation and treatment (Z01.12).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 795 (Normal Newborn, relative weight 0.2022) and DRG 951 (Other Factors Influencing Health Status, relative weight 0.5577), in MDC 15 (Newborns and Other Neonates with Conditions Originating in the Perinatal Period) and MDC 23 (Factors Influencing Health Status and Other Contacts with Health Services), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
More specific hearing test codes (official index)
- with abnormal findings NEC Z01.118 — Encounter for examination of ears and hearing with other abnormal findings
- infant or child (over 28 days old) Z00.129 — Encounter for routine child health examination without abnormal findings
- with abnormal findings Z00.121 — Encounter for routine child health examination with abnormal findings
Common questions about hearing test ICD-10 codes
What is the ICD-10 code for hearing test?
- Z01.10 — Encounter for examination of ears and hearing without abnormal findings. More specific codes apply when the documentation supports them: Z01.118, Z00.129, Z00.121.
What is the ICD-10 code for infant or child hearing test?
- Z00.129 — Encounter for routine child health examination without abnormal findings.
Is Z01.10 billable?
- Yes. Z01.10 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can Z01.10 be used as a principal diagnosis?
- No. It is not acceptable as the principal diagnosis for an inpatient stay; it may be reported as a secondary diagnosis.
Is Z01.10 a CC or MCC?
- No. Z01.10 is neither a CC nor an MCC under MS-DRG v44.0.