2027 ICD-10-CM Diagnosis Code Z86.19Personal history of other infectious and parasitic diseases
Z86.19 is a billable ICD-10-CM diagnosis code for personal history of other infectious and parasitic diseases. 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 Z86.19.
Present on Admission (POA)Billing
Z86.19 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: chickenpox
- H/O: infectious disease
- H/O: pelvic infection
- H/O: rubella
- H/O: scarlatina
- H/O: viral illness
- History of abdominal abscess
- History of aspergilloma
- History of bacterial infection
- History of bacterial sepsis
- History of bilateral prosthetic hip joint removal due to infection
- History of chlamydial infection
- History of cytomegalovirus infection
- History of Dengue virus infection
- History of diphtheria
- History of glandular fever
- History of Haemophilus influenzae type b infection
- History of Helicobacter pylori infection
- History of hepatitis A
- History of hepatitis B
- History of hepatitis B conferring immunity
- History of hepatitis C
- History of herpes simplex keratitis
- History of herpes zoster
- History of histoplasmosis
- History of human papilloma virus infection
- History of infection caused by Candida auris
- History of infection caused by carbapenem resistant Enterobacteriaceae
- History of infection caused by Clostridioides difficile
- History of infection caused by extended spectrum beta-lactamase producing bacteria
- History of infection caused by multiple drug resistant bacterium
- History of infection due to vancomycin resistant enterococcus
- History of infection following procedure
- History of infection of total knee joint prosthesis
- History of intestinal infection caused by Clostridioides difficile
- History of left prosthetic hip joint removal due to infection
- History of left prosthetic knee joint removal due to infection
- History of left prosthetic shoulder joint removal due to infection
- History of Lyme disease
- History of measles
- History of monkeypox
- History of mumps
- History of ocular zoster
- History of parasitic disease
- History of pneumococcal infection
- History of positive Toxoplasma gondii antibody
- History of prosthetic hip joint removal due to infection
- History of right prosthetic hip joint removal due to infection
- History of right prosthetic knee joint removal due to infection
- History of right prosthetic shoulder joint removal due to infection
- History of sepsis
- History of sexually transmitted disease
- History of syphilis
- History of toxoplasmosis
- History of typhoid
- History of viral hepatitis
- History of Zika virus infection
- Postinfectious state
- Recent Dengue virus infection
- Recent Zika virus infection
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to Z86.19: its own notes plus those printed at Z86.1, Z86, block Z77-Z99, and Chapter 21. A note printed at a category, block or chapter applies to every code under it.
Excludes1
Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.
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 Z86.19, its category, or a range that includes it.
Excludes2 1
These codes carry an Excludes2 note naming Z86.19: its condition is not part of those codes, and both may be reported when the patient has both.
Use Additional Code 1
These codes say to use an additional code from the note, and Z86.19 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);
disease or disorder (of) Z87.898
infectious Z86.19
specified NEC Z86.19
parasitic Z86.19
infection NEC Z86.19
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Infectious Diseases
Germs, or microbes, are found everywhere - in the air, soil, and water. There are also germs on your skin and in your body. Many of them are harmless, and some can even be helpful. But some of them can make you sick. Infectious diseases are diseases that are caused by germs.
The full article covers:
- What are infectious diseases?
- What are the different types of germs that cause infectious diseases?
- How can you get infectious diseases?
- What are the symptoms of infectious diseases?
- What are the treatments for infectious diseases?
- Can infectious diseases be prevented?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert Z86.19 to ICD-9-CMHistory
Code History & ChangesHistory
Replaced This code was replaced in the FY 2027 code set by:
- Z86.17 - Personal history of Clostridioides difficile infection
Questions About Z86.19Overview
What is the ICD-10 code for personal history of other infectious and parasitic diseases?
The ICD-10-CM code for personal history of other infectious and parasitic diseases is Z86.19 (sometimes written as Z8619). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is Z86.19 (Personal history of infectious and parasitic diseases) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report personal history of other infectious and parasitic diseases on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does Z86.19 group to?
On inpatient claims, personal history of other infectious and parasitic diseases 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 Z86.19 be a principal diagnosis?
No. The Medicare Code Editor rejects this code as a principal diagnosis because personal history of other infectious and parasitic diseases describes a circumstance that influences health status rather than a current illness. Report it as a secondary diagnosis.
Is Z86.19 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 infectious and parasitic diseases 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.
