Z86.59 ICD-10-CM Code: Personal history of other mental and behavioral disorders
Z86.59 is not a CMS-HCC payment code. MEAT criteria · RAF calculator · free HCC coding tools
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FY 2026 Apr update / Factors influencing health status and contact with health services (Z00-Z99) / Persons with potential health hazards related to family and personal history and certain conditions influencing health status (Z77-Z99)
Z86.59
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidancePersonal history of other mental and behavioral disorders
A patient has a past history of mental or behavioral disorders not classified elsewhere, such as previous substance abuse, eating disorders, or other psychiatric conditions.
CMS-HCC V28
N/A—
Not mapped
CMS-HCC V24
N/A—
Not mapped
ACA/HHS
N/A—
Not mapped
ESRD/PACE
N/A—
Not mapped
RXHCC
N/A—
Not mapped
Code Book Path
Inclusion Terms
Official- Conditions classifiable to F40-F59
Excludes 2
OfficialICD-10-CM does not list Excludes 2 notes for Z86.59 in this effective period.
Related Child Codes
Includes
OfficialICD-10-CM does not list Includes notes for Z86.59 in this effective period.
Excludes 1
OfficialICD-10-CM does not list Excludes 1 notes for Z86.59 in this effective period.
Code First
OfficialICD-10-CM does not list Code First sequencing instructions for Z86.59 in this effective period.
Use Additional
OfficialICD-10-CM does not list Use Additional Code instructions for Z86.59 in this effective period.
Code Also
OfficialICD-10-CM does not list Code Also instructions for Z86.59 in this effective period.
Buddy Documentation Tip
Current with CMS: FY2026 ICD-10-CM Apr 1 update (effective Apr 1 – Sep 30, 2026) · CMS-HCC V28, 100% phased in for payment year 2026. FY2027 code set already staged for October 1, 2026. How HCC Buddy stays current →
Is Z86.59 an HCC code?
No. Z86.59 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.
- Code
- Z86.59
- Description
- Personal history of other mental and behavioral disorders
- HCC (V28)
- No CMS-HCC V28 mapping
- RAF
- —
- Billable
- Yes
- Payment year
- 2026
Coder workflow notes
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This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).
What This Code Means
Z86.59 is the ICD-10-CM diagnosis code for personal history of other mental and behavioral disorders. A patient has a past history of mental or behavioral disorders not classified elsewhere, such as previous substance abuse, eating disorders, or other psychiatric conditions. Z86.59 sits in the ICD-10-CM chapter for factors influencing health status and contact with health services (z00-z99), within the section covering persons with potential health hazards related to family and personal history and certain conditions influencing health status (z77-z99).
Z86.59 is a billable ICD-10-CM code but does not map to a payment HCC under the CMS-HCC V28, V24, ESRD, or RxHCC risk adjustment models. It can be reported on Medicare Advantage encounter data submissions but it does not contribute to a beneficiary's RAF score and therefore does not affect risk-adjusted payments to the plan.
Use this code only when the specific mental health condition is not better represented by another Z86.5x code.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for Z86.59 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Use this code only when the specific mental health condition is not better represented by another Z86.5x code
- •Document the specific mental or behavioral disorder in the medical record for clarity and future reference