Z11 — Encounter for screening for infectious and parasitic diseases

Not billable

Is Z11 billable?

No — Z11 is a non-billable header code. Z11 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 12 billable codes beneath Z11.

Billable codes under this header

Z11 at a glance

Code	Z11
Description	Encounter for screening for infectious and parasitic diseases
Billable	No — header code
Code set	ICD-10-CM FY2027
Valid for encounters	October 1, 2026 – September 30, 2027

Excludes1 — never code together

The conditions below can never be reported together with Z11 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

encounter for diagnostic examination-code to sign or symptom

Inclusion terms

Alternative wording in documentation that is classified to Z11.

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.

Excludes2 — not included here — inherited from Z00-Z13

The conditions below are not part of Z11, but a patient may have both at the same time. When documentation supports it, Z11 and the excluded code may both be reported.

examinations related to pregnancy and reproduction (Z30-Z36, Z39.-)

What codes fall under Z11? (10)

How long has Z11 existed?

Z11 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.

Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.