Conjoined twins
Billable / specificPOA exempt
Q89.4 is a billable, specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes in FY2027.
Inclusion terms
Applicable to
- Craniopagus
- Dicephaly
- Pygopagus
- Thoracopagus
Includes (from Q89)
- Note: Codes from this chapter are not for use on maternal records
Excludes2
Not included here — may be reported together when both conditions exist.
Also known as
- Craniopagus
- Dicephaly
- Pygopagus
- Thoracopagus
- Dicephalus, dicephaly
- Double, monster
- Epignathus
- Fusion, fused, twins
- Ischiopagus
- Janiceps
- Monster, monstrosity, twin
- Parasitic, twin
- Rudimentary, respiratory organs in thoracopagus
- Siamese twin
- Sternopagus
- Syncephalus
Parent code
- Q89Other congenital malformations, not elsewhere classifiedHeader
Related codes
- Q89.0Congenital absence and malformations of spleenHeader
- Q89.1Congenital malformations of adrenal glandBillable
- Q89.2Congenital malformations of other endocrine glandsBillable
- Q89.3Situs inversusBillable
- Q89.7Multiple congenital malformations, not elsewhere classifiedBillable
- Q89.8Other specified congenital malformationsHeader
- Q89.9Congenital malformation, unspecifiedBillable