Z53.21
Z53.21 — Procedure and treatment not carried out due to patient leaving prior to being seen by health care provider
Billable / specific codeICD-10-CM
Z53.21 is a billable, specific ICD-10-CM code for procedure and treatment not carried out due to patient leaving prior to being seen by health care provider. It is valid for submission on a claim.
Risk adjustment
Z53.21 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
How Z53.21 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 Z53.21.
- Refusal of›treatment›left without being seen
- Procedure›not done›because of›patient's decision›left without being seen
Related codes at this level
Codes that share Z53.2. If Z53.21 is not quite right, the correct code is usually one of these.
Questions about Z53.21
- Is Z53.21 a billable ICD-10-CM code?
- Yes. Z53.21 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does Z53.21 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).