2027 ICD-10-CM Diagnosis Code Z86.59Personal history of other mental and behavioral disorders
Z86.59 is a billable ICD-10-CM diagnosis code for personal history of other mental and behavioral disorders. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 951. The code is not accepted as a principal diagnosis by the Medicare Code Editor and exempt from POA reporting. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Personal history of other disease.
Code Identity
Code Classification
Code EditsBilling
Medicare Code Editor checks that affect claim validity for Z86.59.
Present on Admission (POA)Billing
Z86.59 is exempt from POA reporting on inpatient claims to general acute care hospitals. Review the other POA exempt codes in Persons with potential health hazards related to family and personal history and certain conditions influencing health status (Z77-Z99).
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- H/O: anorexia nervosa
- H/O: anxiety state
- H/O: dementia
- H/O: depression
- H/O: psychiatric disorder
- H/O: schizophrenia
- History of agoraphobia
- History of alcohol withdrawal delirium
- History of alcohol withdrawal syndrome
- History of attention deficit hyperactivity disorder
- History of behavior problem
- History of bulimia nervosa
- History of confusion
- History of delirium
- History of dysthymia
- History of eating disorder
- History of emergence delirium
- History of manic depressive disorder
- History of mood disorder
- History of neurodevelopmental disorder
- History of neurosis
- History of postoperative delirium
- History of post-traumatic stress disorder
- History of psychotic disorder
- History of threatening violent behavior toward others
- History of violent behavior toward others
- Repeated self-induced vomiting
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to Z86.59: its own notes plus those printed at Z86, block Z77-Z99, and Chapter 21. A note printed at a category, block or chapter applies to every code under it.
Code First
The underlying condition named in the note is sequenced before this code.
Code Also
A second code may be needed to fully describe the condition; the note gives no sequencing direction.
Notes
General instructions on how these codes are used.
- Z codes represent reasons for encounters. A corresponding procedure code must accompany a Z code if a procedure is performed. Categories Z00-Z99 are provided for occasions when circumstances other than a disease, injury or external cause classifiable to categories A00-Y89 are recorded as 'diagnoses' or 'problems'. This can arise in two main ways:
- (a) When a person who may or may not be sick encounters the health services for some specific purpose, such as to receive limited care or service for a current condition, to donate an organ or tissue, to receive prophylactic vaccination (immunization), or to discuss a problem which is in itself not a disease or injury.
- (b) When some circumstance or problem is present which influences the person's health status but is not in itself a current illness or injury.
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name Z86.59, its category, or a range that includes it.
Use Additional Code 1
These codes say to use an additional code from the note, and Z86.59 is one of the codes named.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
personal (of) See Also: History, family (of);
behavioral disorders Z86.59
disease or disorder (of) Z87.898
mental NEC Z86.59
mental disorder Z86.59
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Mental Disorders
Mental disorders (or mental illnesses) are conditions that affect your thinking, feeling, mood, and behavior. They may happen over a short period of time or come and go. Some can be chronic (long-lasting). They can affect your ability to relate to others and function each day..
The full article covers:
- What are mental disorders?
- What are some types of mental disorders?
- What causes mental disorders?
- Who is at risk for mental disorders?
- How are mental disorders diagnosed?
- What are the treatments for mental disorders?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert Z86.59 to ICD-9-CMHistory
Code HistoryHistory
Questions About Z86.59Overview
What is the ICD-10 code for personal history of other mental and behavioral disorders?
The ICD-10-CM code for personal history of other mental and behavioral disorders is Z86.59 (sometimes written as Z8659). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is Z86.59 (Personal history of mental and behavioral disorders) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report personal history of other mental and behavioral disorders on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does Z86.59 group to?
On inpatient claims, personal history of other mental and behavioral disorders maps to MS-DRG 951 (other Factors Influencing Health Status), which carries a relative weight of 0.5574. Higher weights mean higher Medicare reimbursement.
Can Z86.59 be a principal diagnosis?
No. The Medicare Code Editor rejects this code as a principal diagnosis because personal history of other mental and behavioral disorders describes a circumstance that influences health status rather than a current illness. Report it as a secondary diagnosis.
Is Z86.59 exempt from POA reporting?
Yes. CMS lists this code among those exempt from present on admission reporting, so hospitals do not assign a POA indicator for personal history of other mental and behavioral disorders on inpatient claims. The code appears in the Persons with potential health hazards related to family and personal history and certain conditions influencing health status (Z77-Z99) range of the CMS exempt list.
