ICD-10-CM 2027
ICD-10 code for Worried well
Person with feared health complaint in whom no diagnosis is made
From the official ICD-10-CM alphabetic index entry “Worried well”. Page updated September 29, 2026.
About coding Worried well
The ICD-10-CM code for Worried well is Z71.1 (Person with feared health complaint in whom no diagnosis is made).
Within Z71 (persons encountering health services for other counseling and medical advice, not elsewhere classified), Z71.1 is specifically for person with feared health complaint in whom no diagnosis is made. Related codes cover person encountering health services to consult on behalf of another person (Z71.0), person consulting for explanation of examination or test findings (Z71.2), dietary counseling and surveillance (Z71.3), alcohol abuse counseling and surveillance (Z71.4), drug abuse counseling and surveillance (Z71.5), tobacco abuse counseling (Z71.6), human immunodeficiency virus [HIV] counseling (Z71.7), other specified counseling (Z71.8) and 1 more.
Don't report Z71.1 together with the conditions in its Excludes1 note: medical observation for suspected diseases and conditions proven not to exist (Z03.-).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
Don't confuse with (Excludes1 for Z71.1)
- medical observation for suspected diseases and conditions proven not to exist (Z03.-)
Common questions about Worried well ICD-10 codes
What is the ICD-10 code for Worried well?
- Z71.1 — Person with feared health complaint in whom no diagnosis is made.
Is Z71.1 billable?
- Yes. Z71.1 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can Z71.1 be used as a principal diagnosis?
- No. It is not acceptable as the principal diagnosis for an inpatient stay; it may be reported as a secondary diagnosis.
Is Z71.1 a CC or MCC?
- No. Z71.1 is neither a CC nor an MCC under MS-DRG v44.0.