Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.

Inpatient Payment Groups (MS-DRG)

MS-DRGs this diagnosis helps define, as principal or secondary, per the CMS ICD-10-CM/PCS MS-DRG Definitions Manual v43.0 (FY2026), Appendix B.

A diagnosis appearing in a group's logic does not by itself determine the DRG assigned to a stay; the grouper uses the full claim.

Code Set: Valid FY2026 and FY2027. FY2026 took effect October 1, 2025.

Official Registry Overview & Definition

Personal history of other mental and behavioral disorders is a billable ICD-10-CM diagnosis code (Z86.59).

Sequencing, inclusion, and exclusion notes published for Z86.59 in the official ICD-10-CM tabular list.

Underlying conditions that must be sequenced before this code.

Additional codes that may be required to fully describe the encounter.

Official ICD-10-CM classifications closest to Z86.59 in its code family, with their registry titles.

Z86.31 — Personal history of diabetic foot ulcer
Z86.32 — Personal history of gestational diabetes
Z86.39 — Personal history of other endocrine, nutritional and metabolic disease
Z86.5 — Personal history of mental and behavioral disorders
Z86.51 — Personal history of combat and operational stress reaction
Z86.6 — Personal history of diseases of the nervous system and sense organs
Z86.61 — Personal history of infections of the central nervous system
Z86.69 — Personal history of other diseases of the nervous system and sense organs
Z86.7 — Personal history of diseases of the circulatory system
Z86.71 — Personal history of venous thrombosis and embolism

Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code.