Z53.2 Procedure and treatment not carried out because of patient's decision for other and unspecified reasons

Not billable (header)Chapter 21

Report one of the more specific codes below.

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Codes under this one

Z53.20 Procedure and treatment not carried out because of patient's decision for unspecified reasons
Z53.21 Procedure and treatment not carried out due to patient leaving prior to being seen by health care provider
Z53.29 Procedure and treatment not carried out because of patient's decision for other reasons

Instructional notes

Chapter 21

Notes

Z codes represent reasons for encounters. A corresponding procedure code must accompany a Z code if a procedure is performed. Categories Z00-Z99 are provided for occasions when circumstances other than a disease, injury or external cause classifiable to categories A00-Y89 are recorded as 'diagnoses' or 'problems'. This can arise in two main ways:
(a) When a person who may or may not be sick encounters the health services for some specific purpose, such as to receive limited care or service for a current condition, to donate an organ or tissue, to receive prophylactic vaccination (immunization), or to discuss a problem which is in itself not a disease or injury.
(b) When some circumstance or problem is present which influences the person's health status but is not in itself a current illness or injury.

Section Z40-Z53

Excludes2Not included here: the patient may have both; report both when both are present.

follow-up examination for medical surveillance after treatment (Z08-Z09)

Inclusion terms

Categories Z40-Z53 are intended for use to indicate a reason for care. They may be used for patients who have already been treated for a disease or injury, but who are receiving aftercare or prophylactic care, or care to consolidate the treatment, or to deal with a residual state

Chapter 21: Factors influencing health status and contact with health services · Z40-Z53 Encounters for other specific health care (Z40-Z53)

Source: ICD-10-CM FY 2027 code descriptions and tabular list (CMS and CDC National Center for Health Statistics), effective 2026-10-01 through 2027-09-30 · CMS ICD-10 files. HCC mapping: CMS-HCC V28, payment year 2027. As of 2026-11-04.

Coverage and payment depend on the claim details; confirm with the Medicare Administrative Contractor.