AB1Z
Diseases of middle ear or mastoid, unspecified
Diseases of middle ear or mastoid, unspecified
ICD-10 Equivalents(7)
ICD-10 Equivalents
View full mappingCorresponding ICD-10-CM codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(7)
UMLS ↗
- Diseases of middle ear and mastoid (H65-H75)C0477442
- Other disorders of middle ear mastoidC0155472
- Oth disrd of middle ear and mastoid, unspecified earC0477452
- Unsp disorder of middle ear and mastoid, unspecified earC0155494
- Oth disord of mid ear and mastoid in diseases classd elswhrC0694494
- Mastoiditis in infec/parastc dis classd elswhr, unsp earC0477453
- Oth disrd of mid ear and mast in dis classd elswhr, unsp earC0477454
Frequently Asked Questions
What is the ICD-11 code for diseases of middle ear or mastoid, unspecified?
The ICD-11 code for diseases of middle ear or mastoid, unspecified is AB1Z. The full clinical description is "Diseases of middle ear or mastoid, unspecified".
What does ICD-11 code AB1Z mean?
ICD-11 code AB1Z represents “Diseases of middle ear or mastoid, unspecified”. It is classified under Chapter 10: Diseases of the Ear or Mastoid Process.
What chapter is AB1Z in?
AB1Z is in Chapter 10: Diseases of the Ear or Mastoid Process (codes AA00-AC0Z).
What is the ICD-10 equivalent of ICD-11 code AB1Z?
AB1Z maps to 7 ICD-10 codes: H65-H75, H74 (Other disorders of middle ear mastoid), H74.8 (Other specified disorders of middle ear and mastoid), and 4 more. ICD-10 and ICD-11 do not always have one-to-one mappings — check the mapping type (equivalent, approximate, narrower, or broader) for each result.
What is the difference between ICD-10 and ICD-11?
ICD-11 is the latest revision of the WHO's International Classification of Diseases, succeeding ICD-10. Key differences include: a fully digital-first design, new chapters for sleep-wake disorders, sexual health, and traditional medicine, improved coding for rare diseases, and better integration with electronic health records through extension codes.
What UMLS concepts map to ICD-11 code AB1Z?
AB1Z is linked to 7 UMLS Concept Unique Identifiers: C0477442, C0155472, C0477452, C0155494, C0694494, and 2 more. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
Automate Medical Coding With AI
Send clinical text to the AutoICD API and get back structured ICD-10 and ICD-11 codes with confidence scores. Integrates into any EHR or billing system in minutes.
Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.