MCMedicalCodingSoftware
Z99.12

Z99.12: Encounter for respirator [ventilator] dependence during power failure

Billable / specific codeICD-10-CMPOA exempt

Z99.12 is a billable, specific ICD-10-CM code for encounter for respirator [ventilator] dependence during power failure. It is valid for submission on a claim.

Check Z99.12 with the rest of the claim: free scrubber

Excludes1: never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

  • mechanical complication of respirator [ventilator] (J95.850)

Other codes that can never be billed with Z99.12

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • J95.850Mechanical complication of respirator

Risk adjustment

Z99.12 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:

  • HCC 211 Respirator Dependence/Tracheostomy Status/Complications0.879 RAF

Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score. Look up the whole chart to see which of its HCCs the hierarchy would zero.

Alphabetic index entries that lead here

  • Admission›respirator [ventilator] use during power failure
  • Encounter›respirator [ventilator] use during power failure

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under Z99.1

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.