ICD-10-CM 2027
ICD-10 code for cochlea replacement by artificial or mechanical device or prosthesis of
From the official ICD-10-CM alphabetic index entry “Replacement by artificial or mechanical device or prosthesis of › cochlea”. Page updated September 29, 2026.
About coding cochlea replacement by artificial or mechanical device or prosthesis of
The ICD-10-CM code for cochlea replacement by artificial or mechanical device or prosthesis of is Z96.21 (Cochlear implant status).
Within Z96.2 (presence of otological and audiological implants), Z96.21 is specifically for cochlear implant status. Related codes cover presence of otological and audiological implant, unspecified (Z96.20), myringotomy tube(s) status (Z96.22) and presence of other otological and audiological implants (Z96.29).
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 951 (Other Factors Influencing Health Status, relative weight 0.5577), in 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.
Common questions about cochlea replacement by artificial or mechanical device or prosthesis of ICD-10 codes
What is the ICD-10 code for cochlea replacement by artificial or mechanical device or prosthesis of?
- Z96.21 — Cochlear implant status.
Is Z96.21 billable?
- Yes. Z96.21 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can Z96.21 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 Z96.21 a CC or MCC?
- No. Z96.21 is neither a CC nor an MCC under MS-DRG v44.0.