Z01.818
Encounter for other preprocedural examination
Z01.818 (also written Z01818) is a billable ICD-10-CM diagnosis code for encounter for other preprocedural examination. It is part of the FY2027 code set, effective October 1, 2026. It is one of the 23 codes in category Z01 (Encounter for other special examination without complaint, suspected or reported diagnosis). The Alphabetic Index lists it under 4 entries. Its coding notes include 3 Excludes1 entries and 3 Excludes2 entries.
Guidelines tip
From the FY2027 Official Guidelines. ICD10Ref adds no rules of its own.
These codes are not used when the examination is for diagnosing a suspected condition or for treatment. Conditions discovered are coded as additional codes, and an exam with abnormal findings needs a code for each finding.
Excludes1
Not coded here. The listed conditions generally should not be reported together.
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
Includes
Further defines or gives examples of the content of the category.
- routine examination of specific system
Inclusion terms
Conditions classified to this code.
- Encounter for preprocedural examination NOS
- Encounter for examinations prior to antineoplastic chemotherapy
Notes
- Codes from category Z01 represent the reason for the encounter. A separate procedure code is required to identify any examinations or procedures performed
Also from chapter/block level (4 notes)
- Nonspecific abnormal findings disclosed at the time of these examinations are classified to categories R70-R94.
- 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.
Alphabetic Index terms
Terms the official Alphabetic Index lists for this code. 4 entries
- Examination (for) (following) (general) (of) (routine), medical (adult) (for) (of), pre-procedural, specified NEC
- Examination (for) (following) (general) (of) (routine), pre-chemotherapy (antineoplastic)
- Examination (for) (following) (general) (of) (routine), pre-procedural (pre-operative), specified NEC
- Examination (for) (following) (general) (of) (routine), prior to chemotherapy (antineoplastic)