H90.1Conductive hearing loss, unilateral with unrestricted hearing on the contralateral side
Code usage status
Primary diagnosis
Not recommended as the primary diagnosis
Apply only when it matches the confirmed diagnosis and the documented clinical record.
Specificity
Complete code in the classification
Use when the diagnosis matches and no exclusion applies.
- Chapter VIII
- Diseases of the ear and mastoid process
- Group H90-H95
- Other disorders of ear
- Official Vietnamese name
- Giảm thính lực dẫn truyền một bên tai, không hạn chế sức nghe ở tai còn lại
Related H90 codes
H90
Conductive and sensorineural hearing loss
H90.0
Conductive hearing loss, bilateral
H90.2
Conductive hearing loss, unspecified
H90.3
Sensorineural hearing loss, bilateral
H90.4
Sensorineural hearing loss, unilateral with unrestricted hearing on the contralateral side
H90.5
Sensorineural hearing loss, unspecified
H90.6
Mixed conductive and sensorineural hearing loss, bilateral
H90.7
Mixed conductive and sensorineural hearing loss, unilateral with unrestricted hearing on the contralateral side
H90.8
Mixed conductive and sensorineural hearing loss, unspecified
Clinical record checklist
View coding guide →- Confirm that the code matches the final documented diagnosis.
- Use one primary-diagnosis code and record only relevant additional conditions.
- Review Ministry indicators, inclusions, exclusions and notes.
- Do not infer a diagnosis beyond the clinical record.
2026 regulatory basis
Indicators are taken from columns 24–29 of the classification accompanying Circular 06/2026/TT-BYT, cross-referenced with Decision 1849/QĐ-BYT and Official Dispatch 4059/BYT-BH.
