Is Z13.85 a billable ICD-10-CM code?

No. Z13.85 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does Z13.85 sit in the tabular list?

Factors influencing health status and contact with health services (Z00-Z99), in the block Persons encountering health services for examinations (Z00-Z13).

What cannot be coded together with Z13.85?

Z13.85 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above Z13.85 (Z13) and apply to it just the same.

Z13.85

Z13.85 — Encounter for screening for nervous system disorders

Non-billable headerICD-10-CM

Z13.85 is a non-billable header ICD-10-CM code for encounter for screening for nervous system disorders. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1 inherited from the categories above Z13.85

These are not written on Z13.85, but they bind it: a note on a category applies to every code beneath it. Billing Z13.85 with anything listed here is a denial.

Written on Z13 — Encounter for screening for other diseases and disorders

encounter for diagnostic examination-code to sign or symptom

Excludes2 inherited from the categories above Z13.85

Also inherited, and the opposite of Excludes1: these conditions are not part of Z13.85, but a patient can have both, so you may code both.

Written on Z13.8 — Encounter for screening for other specified diseases and disorders

screening for malignant neoplasms (Z12.-)

Risk adjustment

Z13.85 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Code history

Z13.85 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Code to one of these instead Z13.85

2 child codes. Green means billable.

Related codes at this level

Codes that share Z13.8. If Z13.85 is not quite right, the correct code is usually one of these.

Questions about Z13.85

Is Z13.85 a billable ICD-10-CM code?: No. Z13.85 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does Z13.85 sit in the tabular list?: Factors influencing health status and contact with health services (Z00-Z99), in the block Persons encountering health services for examinations (Z00-Z13).
What cannot be coded together with Z13.85?: Z13.85 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above Z13.85 (Z13) and apply to it just the same.