2027 ICD-10-CM Diagnosis Code Z83.2Family history of diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism
Z83.2 is a billable ICD-10-CM diagnosis code for family history of diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism. 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 Family history of disease.
Code Identity
Code Classification
Code EditsBilling
Medicare Code Editor checks that affect claim validity for Z83.2.
Present on Admission (POA)Billing
Z83.2 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.
- Family history of alpha thalassemia
- Family history of antiphospholipid syndrome
- Family history of antithrombin III deficiency
- Family history of asplenia
- Family history of beta thalassemia
- Family history of blood coagulation disorder
- Family history of congenital immunodeficiency disease
- Family history of disorder due to sex chromosome abnormality
- Family history of disorder of immune function
- Family history of factor V deficiency
- Family history of Factor V Leiden mutation
- Family history of hemoglobinopathy
- Family history of hemoglobinopathy C
- Family history of hemoglobinopathy E
- Family history of hemophilia A
- Family history of hypercoagulable state
- Family history of immunodeficiency disorder
- Family history of pernicious anemia
- Family history of polycythemia
- Family history of protein C deficiency
- Family history of protein C resistance
- Family history of protein S deficiency
- Family history of rheumatic fever
- Family history of sarcoidosis
- Family history of sickle cell anemia
- Family history of Von Willebrand disease
- FH: Anemia
- FH: Autoimmune disease
- FH: Blood disorder
- FH: Hemophilia
- FH: Hereditary spherocytosis
- FH: Sickle cell trait
- FH: Spherocytosis
- FH: Thalassemia
- Partner has hemophilia
- Spouse hemophiliac
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to Z83.2: its own notes plus those printed at Z83, block Z77-Z99, and Chapter 21. A note printed at a category, block or chapter applies to every code under it.
Applicable To
Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.
Excludes2
Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.
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 Z83.2, its category, or a range that includes it.
Use Additional Code 1
These codes say to use an additional code from the note, and Z83.2 is one of the codes named.
- Z15 Genetic susceptibility to disease
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
family (of) See Also: History, personal (of);
anemia Z83.2
hematological Z83.2
immune mechanism Z83.2
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Blood Disorders
Your blood is living tissue made up of liquid and solids. The liquid part, called plasma, is made of water, salts and protein. Over half of your blood is plasma. The solid part of your blood contains red blood cells, white blood cells and platelets.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert Z83.2 to ICD-9-CMHistory
Code HistoryHistory
Questions About Z83.2Overview
Is Z83.2 (Family history of other specific disorders) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report family history of diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does Z83.2 group to?
On inpatient claims, family history of diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism 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 Z83.2 be a principal diagnosis?
No. The Medicare Code Editor rejects this code as a principal diagnosis because family history of diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism describes a circumstance that influences health status rather than a current illness. Report it as a secondary diagnosis.
Is Z83.2 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 family history of diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism 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.
What is the ICD-9 equivalent of Z83.2?
Under the General Equivalence Mappings, family history of diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism converts to ICD-9-CM V18.2 (family hx-anemia) and V18.3 (fam hx-blood disord NEC). The mapping is approximate, so confirm the match fits the documentation.
