2027 ICD-10-CM Diagnosis Code Z64.1Problems related to multiparity
Z64.1 is a billable ICD-10-CM diagnosis code for problems related to multiparity. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 742 through 743, 760 through 761. The code is not accepted as a principal diagnosis by the Medicare Code Editor and exempt from POA reporting. Coders also document this condition as grand multipara. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Socioeconomic/psychosocial factors.
Code Identity
Code Classification
Code EditsBilling
Medicare Code Editor checks that affect claim validity for Z64.1.
Present on Admission (POA)Billing
Z64.1 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 socioeconomic and psychosocial circumstances (Z55-Z65).
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Grand multipara
- Para 5
- Para 6
- Para 7
- Parity eight
- Parity nine
- Parity ten or more
- Psychosocial problems related to multiparity
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to Z64.1: its own notes plus those printed at Chapter 21. A note printed at a category, block or chapter applies to every code under it.
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.
Index to Diseases and InjuriesGuidance
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Twins, Triplets, Multiple Births
If you are pregnant with more than one baby, you are far from alone. Multiple births are up in the United States. More women are having babies after age 30 and more are taking fertility drugs. Both boost the chance of carrying more than one baby. A family history of twins also makes multiples more likely.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert Z64.1 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About Z64.1Overview
What is the ICD-10 code for problems related to multiparity?
The ICD-10-CM code for problems related to multiparity is Z64.1 (sometimes written as Z641). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is Z64.1 (Problems related to certain psychosocial circumstances) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report problems related to multiparity on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does Z64.1 group to?
On inpatient claims, problems related to multiparity maps to MS-DRG 742, 743, 760, 761, with relative weights from 0.7039 to 1.8448 depending on complications. Higher weights mean higher Medicare reimbursement.
Can Z64.1 be a principal diagnosis?
No. The Medicare Code Editor rejects this code as a principal diagnosis because problems related to multiparity describes a circumstance that influences health status rather than a current illness. Report it as a secondary diagnosis.
Is Z64.1 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 problems related to multiparity on inpatient claims. The code appears in the Persons with potential health hazards related to socioeconomic and psychosocial circumstances (Z55-Z65) range of the CMS exempt list.
