| Z53 | Persons encountering health services for specific procedures and treatment, not carried out | NON-BILLABLE CODE |
| Z53.0 | Procedure and treatment not carried out because of contraindication | NON-BILLABLE CODE |
| Z53.09 | Procedure and treatment not carried out because of other contraindication | BILLABLE CODE |
| Z53.1 | Procedure and treatment not carried out because of patient's decision for reasons of belief and group pressure | BILLABLE CODE |
| Z53.2 | Procedure and treatment not carried out because of patient's decision for other and unspecified reasons | NON-BILLABLE CODE |
| Z53.20 | Procedure and treatment not carried out because of patient's decision for unspecified reasons | BILLABLE CODE |
| Z53.21 | Procedure and treatment not carried out due to patient leaving prior to being seen by health care provider | BILLABLE CODE |
| Z53.29 | Procedure and treatment not carried out because of patient's decision for other reasons | BILLABLE CODE |
| Z53.3 | Procedure converted to open procedure | NON-BILLABLE CODE |
| Z53.31 | Laparoscopic surgical procedure converted to open procedure | BILLABLE CODE |
| Z53.32 | Thoracoscopic surgical procedure converted to open procedure | BILLABLE CODE |
| Z53.33 | Arthroscopic surgical procedure converted to open procedure | BILLABLE CODE |
| Z53.39 | Other specified procedure converted to open procedure | BILLABLE CODE |
| Z53.8 | Procedure and treatment not carried out for other reasons | BILLABLE CODE |
| Z53.9 | Procedure and treatment not carried out, unspecified reason | BILLABLE CODE |
