Alphabetic Index FY2027

Z11

Encounter for screening for infectious and parasitic diseases

FY2027Chapter 21: Factors influencing health status and contact with health services/Z00–Z13 Persons encountering health services for examinations

Non-billable headerNot valid on its own. Use one of the more specific codes under it.

Z11 is a non-billable ICD-10-CM code category for encounter for screening for infectious and parasitic diseases. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are Z11.0 Encounter for screening for intestinal infectious diseases, Z11.1 Encounter for screening for respiratory tuberculosis, Z11.2 Encounter for screening for other bacterial diseases, Z11.3 Encounter for screening for infections with a predominantly sexual mode of transmission and 6 more. Its coding notes include 1 Excludes1 entry and 1 Excludes2 entry.

Guidelines tip

From the FY2027 Official Guidelines. ICD10Ref adds no rules of its own.

Testing to confirm or rule out a suspected diagnosis because of a sign or symptom is diagnostic, not screening. A screening code can be first-listed when the visit is for the screening.

Guidelines I.C.21.c.5Screening Z codesRead the official text

Excludes1

Not coded here. The listed conditions generally should not be reported together.

This code
  • encounter for diagnostic examination-code to sign or symptom

Excludes2

Not included here. Both codes may be reported if the patient has both conditions.

Also from chapter/block level (1 note)
Inherited from Z00–Z13 Persons encountering health services for examinations
  • examinations related to pregnancy and reproduction (Z30-Z36, Z39.-)

Inclusion terms

Conditions classified to this code.

This code
  • Screening is the testing for disease or disease precursors in asymptomatic individuals so that early detection and treatment can be provided for those who test positive for the disease.

Notes

Also from chapter/block level (4 notes)
Inherited from Z00–Z13 Persons encountering health services for examinations
  • Nonspecific abnormal findings disclosed at the time of these examinations are classified to categories R70-R94.
Inherited from Chapter 21 Factors influencing health status and contact with health services
  • 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.

More specific codes under Z11 10