TABLE 6P.1c-List of ICD-10-CM diagnosis codes that relate to the Unacceptable Principal Diagnosis Edit for Multiple Gestation 	
1 Finalized Medicare Code Editor (MCE) changes	
ICD-10-PCS Procedure Code	Code Description
O30001	"Twin preg, unsp num plcnta & amnio sacs, first trimester"
O30002	"Twin preg, unsp num plcnta & amnio sacs, second trimester"
O30003	"Twin preg, unsp num plcnta & amnio sacs, third trimester"
O30009	"Twin pregnancy, unsp num plcnta & amnio sacs, unsp trimester"
O30011	"Twin pregnancy, monochorionic/monoamniotic, first trimester"
O30012	"Twin pregnancy, monochorionic/monoamniotic, second trimester"
O30013	"Twin pregnancy, monochorionic/monoamniotic, third trimester"
O30019	"Twin pregnancy, monochorionic/monoamniotic, unsp trimester"
O30031	"Twin pregnancy, monochorionic/diamniotic, first trimester"
O30032	"Twin pregnancy, monochorionic/diamniotic, second trimester"
O30033	"Twin pregnancy, monochorionic/diamniotic, third trimester"
O30039	"Twin pregnancy, monochorionic/diamniotic, unsp trimester"
O30041	"Twin pregnancy, dichorionic/diamniotic, first trimester"
O30042	"Twin pregnancy, dichorionic/diamniotic, second trimester"
O30043	"Twin pregnancy, dichorionic/diamniotic, third trimester"
O30049	"Twin pregnancy, dichorionic/diamniotic, unsp trimester"
O30091	"Twin preg, unable to dtrm num plcnta & amnio sacs, first tri"
O30092	"Twin preg, unable to dtrm num plcnta & amnio sacs, 2nd tri"
O30093	"Twin preg, unable to dtrm num plcnta & amnio sacs, third tri"
O30099	"Twin preg, unable to dtrm num plcnta & amnio sacs, unsp tri"
O30101	"Triplet preg, unsp num plcnta & amnio sacs, first trimester"
O30102	"Triplet preg, unsp num plcnta & amnio sacs, second trimester"
O30103	"Triplet preg, unsp num plcnta & amnio sacs, third trimester"
O30109	"Triplet preg, unsp num plcnta & amnio sacs, unsp trimester"
O30111	"Triplet preg w two or more monochorionic fetuses, first tri"
O30112	"Triplet preg w two or more monochorionic fetuses, second tri"
O30113	"Triplet preg w two or more monochorionic fetuses, third tri"
O30119	"Triplet preg w two or more monochorionic fetuses, unsp tri"
O30121	"Triplet preg w two or more monoamnio fetuses, first tri"
O30122	"Triplet preg w two or more monoamnio fetuses, second tri"
O30123	"Triplet preg w two or more monoamnio fetuses, third tri"
O30129	"Triplet preg w two or more monoamnio fetuses, unsp trimester"
O30191	"Trp preg, unable to dtrm num plcnta & amnio sacs, first tri"
O30192	"Trp preg, unable to dtrm num plcnta & amnio sacs, second tri"
O30193	"Trp preg, unable to dtrm num plcnta & amnio sacs, third tri"
O30199	"Trp preg, unable to dtrm num plcnta & amnio sacs, unsp tri"
O30201	"Quad preg, unsp num plcnta & amnio sacs, first trimester"
O30202	"Quad preg, unsp num plcnta & amnio sacs, second trimester"
O30203	"Quad preg, unsp num plcnta & amnio sacs, third trimester"
O30209	"Quad pregnancy, unsp num plcnta & amnio sacs, unsp trimester"
O30211	"Quad preg w two or more monochorionic fetuses, first tri"
O30212	"Quad preg w two or more monochorionic fetuses, second tri"
O30213	"Quad preg w two or more monochorionic fetuses, third tri"
O30219	"Quad preg w two or more monochorionic fetuses, unsp tri"
O30221	"Quad preg w two or more monoamnio fetuses, first trimester"
O30222	"Quad preg w two or more monoamnio fetuses, second trimester"
O30223	"Quad preg w two or more monoamnio fetuses, third trimester"
O30229	"Quad preg w two or more monoamnio fetuses, unsp trimester"
O30291	"Quad preg, unable to dtrm num plcnta & amnio sacs, first tri"
O30292	"Quad preg, unable to dtrm num plcnta & amnio sacs, 2nd tri"
O30293	"Quad preg, unable to dtrm num plcnta & amnio sacs, third tri"
O30299	"Quad preg, unable to dtrm num plcnta & amnio sacs, unsp tri"
O30801	"Oth multiple gest, unsp num plcnta & amnio sacs, first tri"
O30802	"Oth multiple gest, unsp num plcnta & amnio sacs, second tri"
O30803	"Oth multiple gest, unsp num plcnta & amnio sacs, third tri"
O30809	"Oth multiple gest, unsp num plcnta & amnio sacs, unsp tri"
O30811	"Oth mult gest w two or more monochorionic fetuses, first tri"
O30812	"Oth mult gest w two or more monochorionic fetuses, 2nd tri"
O30813	"Oth mult gest w two or more monochorionic fetuses, third tri"
O30819	"Oth mult gest w two or more monochorionic fetuses, unsp tri"
O30821	"Oth multiple gest w two or more monoamnio fetuses, first tri"
O30822	"Oth mult gest w two or more monoamnio fetuses, second tri"
O30823	"Oth multiple gest w two or more monoamnio fetuses, third tri"
O30829	"Oth multiple gest w two or more monoamnio fetuses, unsp tri"
O30891	"Oth mult gest, unab to dtrm num plcnta & amnio sacs, 1st tri"
O30892	"Oth mult gest, unab to dtrm num plcnta & amnio sacs, 2nd tri"
O30893	"Oth mult gest, unab to dtrm num plcnta & amnio sacs, 3rd tri"
O30899	"Oth mult gest,unab to dtrm num plcnta & amnio sacs, unsp tri"
