Z45.321 Encounter for adjustment and management of cochlear device

Billable ICD-10-CM code, FY2026. Exempt from present-on-admission (POA) reporting.

Applies from Z45 Encounter for adjustment and management of implanted device

Includes

• removal or replacement of implanted device

Excludes1 (never code together)

• malfunction or other complications of device - see Alphabetical Index

Excludes2 (not included here)

• encounter for fitting and adjustment of non-implanted device (Z46.-)

Applies from Z45.32 Encounter for adjustment and management of implanted hearing device

Excludes1 (never code together)

• Encounter for fitting and adjustment of hearing aid (Z46.1)

MS-DRG index

Defines the logic of DRG(s) 154-156 in MDC 03.

Approximate ICD-9-CM (GEMs)

• V53.09 Fitting and adjustment of other devices related to nervous system and special senses (approximate)

Code annotations containing back-references to Z45.321

Back-references to Z45.32

• Type 1 Excludes: Z46.1 Encounter for fitting and adjustment of hearing aid ("encounter for adjustment and management of implanted hearing device (Z45.32-)")

Back-references to Z45

• Type 1 Excludes: Z08 Encounter for follow-up examination after completed treatment for malignant neoplasm ("aftercare following medical care (Z43-Z49, Z51)")
• Type 1 Excludes: Z09 Encounter for follow-up examination after completed treatment for conditions other than malignant neoplasm ("aftercare following medical care (Z43-Z49, Z51)")
• Type 1 Excludes: Z09 Encounter for follow-up examination after completed treatment for conditions other than malignant neoplasm ("surveillance of prosthetic and other medical devices (Z44-Z46)")
• Type 2 Excludes: Z43 Encounter for attention to artificial openings ("fitting and adjustment of prosthetic and other devices (Z44-Z46)")
• Type 2 Excludes: Z46 Encounter for fitting and adjustment of other devices ("encounter for fitting and management of implanted devices (Z45.-)")
• Type 2 Excludes: Z48 Encounter for other postprocedural aftercare ("encounter for fitting and adjustment of prosthetic and other devices (Z44-Z46)")
• Type 2 Excludes: Z96 Presence of other functional implants ("fitting and adjustment of prosthetic and other devices (Z44-Z46)")
• Type 2 Excludes: Z97 Presence of other devices ("fitting and adjustment of prosthetic and other devices (Z44-Z46)")
• Type 2 Excludes: Z98 Other postprocedural states ("aftercare (Z43-Z49, Z51)")

Diagnosis Index entries for Z45.321

• Admission (for) › adjustment (of) › device NEC › implanted › hearing device › cochlear
• Management (of) › cochlear device (implanted)

Nearby codes

• Z45.2 Encounter for adjustment and management of vascular access device
• Z45.3 Encounter for adjustment and management of implanted devices of the special senses
• Z45.31 Encounter for adjustment and management of implanted visual substitution device
• Z45.32 Encounter for adjustment and management of implanted hearing device
• Z45.320 Encounter for adjustment and management of bone conduction device
• Z45.321 Encounter for adjustment and management of cochlear device (this code)
• Z45.328 Encounter for adjustment and management of other implanted hearing device
• Z45.4 Encounter for adjustment and management of implanted nervous system device
• Z45.41 Encounter for adjustment and management of cerebrospinal fluid drainage device
• Z45.42 Encounter for adjustment and management of neurostimulator
• Z45.49 Encounter for adjustment and management of other implanted nervous system device