ICDcodes.org
FY2027

Z00.6 — Encounter for examination for normal comparison and control in clinical research program

Billable

Is Z00.6 billable?

Yes — Z00.6 is billable for FY2027. Z00.6 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. Z00.6 may be submitted for encounters from October 1, 2026 through September 30, 2027.

Z00.6 at a glance

CodeZ00.6
DescriptionEncounter for examination for normal comparison and control in clinical research program
BillableYes
Code setICD-10-CM FY2027
Valid for encountersOctober 1, 2026 – September 30, 2027

Which MS-DRGs does Z00.6 group to?

Z00.6 sits in MDC 23 and helps define the logic of 1 MS-DRG (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.

  • 951Other Factors Influencing Health Statusmedical

How is Z00.6 listed in the Alphabetic Index?

These are the routes through the Alphabetic Index that lead to Z00.6. They show the wording a clinician may have documented, which often differs from the Tabular description.

  • Clinical research investigation (clinical trial) (control subject) (normal comparison) (participant)
  • Admission › clinical research investigation (for)
  • Examination › clinical research control or normal comparison (for) (following) (general) (of) (routine)
  • Investigation › clinical research subject
  • Person › admitted for clinical research, as a control subject (with)
  • Admission › examination at health care facility › clinical research investigation (for)
  • Examination › medical › clinical research, normal subject (for) (following) (general) (of) (routine)
  • Examination › medical › control subject in clinical research (for) (following) (general) (of) (routine)

Inclusion terms

Alternative wording in documentation that is classified to Z00.6.

  • Examination of participant or control in clinical research program

Excludes1 — never code together — inherited from Z00

The conditions below can never be reported together with Z00.6 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 examination for administrative purposes (Z02.-)

Excludes2 — not included here — inherited from Z00-Z13

The conditions below are not part of Z00.6, but a patient may have both at the same time. When documentation supports it, Z00.6 and the excluded code may both be reported.

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

Excludes2 — not included here — inherited from Z00

The conditions below are not part of Z00.6, but a patient may have both at the same time. When documentation supports it, Z00.6 and the excluded code may both be reported.

  • encounter for pre-procedural examinations (Z01.81-)
  • special screening examinations (Z11-Z13)

How long has Z00.6 existed?

Z00.6 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.

Which conditions are coded to Z00.6?

What other codes are in the Z00 family? (7)