Is Z43.5 a billable ICD-10-CM code?

Yes. Z43.5 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does Z43.5 sit in the tabular list?

Factors influencing health status and contact with health services (Z00-Z99), in the block Encounters for other specific health care (Z40-Z53).

What cannot be coded together with Z43.5?

Z43.5 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above Z43.5 (Z43) and apply to it just the same.

Z43.5

Z43.5 — Encounter for attention to cystostomy

Billable / specific codeICD-10-CMPOA exempt

Z43.5 is a billable, specific ICD-10-CM code for encounter for attention to cystostomy. It is valid for submission on a claim.

Excludes1 inherited from the categories above Z43.5

These are not written on Z43.5, but they bind it: a note on a category applies to every code beneath it. Billing Z43.5 with anything listed here is a denial.

Written on Z43 — Encounter for attention to artificial openings

complications of external stoma (J95.0-, K94.-, N99.5-)

Excludes2 inherited from the categories above Z43.5

Also inherited, and the opposite of Excludes1: these conditions are not part of Z43.5, but a patient can have both, so you may code both.

Written on Z43 — Encounter for attention to artificial openings

fitting and adjustment of prosthetic and other devices (Z44-Z46)

Other codes that can never be billed with Z43.5

These codes carry an Excludes1 note pointing at Z43.5. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading Z43.5 alone.

Z93Artificial opening status

Risk adjustment

Z43.5 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:

HCC 463 Artificial Openings for Feeding or Elimination0.673 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.

How Z43.5 is indexed

Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to Z43.5.

Attention›cystostomy
Cystostomy›attention to
Admission›attention to artificial opening›cystostomy
Admission›removal of›cystostomy catheter
Attention›artificial›opening›urinary tract NEC›cystostomy

Code history

Z43.5 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Related codes at this level

Codes that share Z43. If Z43.5 is not quite right, the correct code is usually one of these.

Questions about Z43.5

Is Z43.5 a billable ICD-10-CM code?: Yes. Z43.5 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does Z43.5 sit in the tabular list?: Factors influencing health status and contact with health services (Z00-Z99), in the block Encounters for other specific health care (Z40-Z53).
What cannot be coded together with Z43.5?: Z43.5 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above Z43.5 (Z43) and apply to it just the same.