2027 ICD-10-CM Diagnosis Code Z67.90Unspecified blood type, Rh positive
Z67.90 is a billable ICD-10-CM diagnosis code for unspecified blood type, Rh positive. 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 Other specified status.
Code Identity
Code Classification
Code EditsBilling
Medicare Code Editor checks that affect claim validity for Z67.90.
Present on Admission (POA)Billing
Z67.90 is exempt from POA reporting on inpatient claims to general acute care hospitals. Review the other POA exempt codes in Blood type (Z67).
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- ABO group phenotype
- Blood group Para-Bombay
- Cartwright antigen type
- cde haplotype
- Chido-Rodgers blood group phenotype
- Chido-Rogers antigen type
- Ch-Rg- phenotype
- Co phenotype
- Colton blood group phenotype
- Cromer blood group phenotype
- Diego antigen type
- Duffy antigen type
- Duffy blood group
- Duffy blood group phenotype
- Finding of Rh blood group
- Finding of Rh genotype
- Gerbich blood group phenotype
- Gerbich negative phenotype
- Gerbich positive phenotype
- Gerbich type
- H antigen type
- Hh blood group phenotype
- I blood group phenotype
- Inab phenotype
- Kell antigen type
- Kell blood group phenotype
- Kidd antigen type
- Kidd blood group phenotype
- Kx antigen type
- Kx blood group phenotype
- Landsteiner-Weiner antigen type
- Landsteiner-Wiener phenotype
- Leach type
- Lewis blood group phenotype
- Low incidence antigen type
- Lutheran blood group phenotype
- Melasian type
- MNS antigen type
- MNS blood group phenotype
- P blood group phenotype
- Rh blood group phenotype
- RhD positive
- Yus type
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to Z67.90: 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
Alphabetical index entries that point to this code.
Rh (positive) Z67.90
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Blood
Your blood is 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 Z67.90 to ICD-9-CMHistory
Code HistoryHistory
Questions About Z67.90Overview
What is the ICD-10 code for unspecified blood type, Rh positive?
The ICD-10-CM code for unspecified blood type, Rh positive is Z67.90 (sometimes written as Z6790). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is Z67.90 (Unspecified blood type) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report unspecified blood type, Rh positive on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does Z67.90 group to?
On inpatient claims, unspecified blood type, Rh positive 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 Z67.90 be a principal diagnosis?
No. The Medicare Code Editor rejects this code as a principal diagnosis because unspecified blood type, Rh positive describes a circumstance that influences health status rather than a current illness. Report it as a secondary diagnosis.
Is Z67.90 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 unspecified blood type, Rh positive on inpatient claims. The code appears in the Blood type (Z67) range of the CMS exempt list.
