MCC Codes: Congenital Malformations, Deformations and Chromosomal Abnormalities (Q00-Q99)

49 codes in Q00-Q99 are an MCC as a secondary diagnosis under MS-DRG v44.0 (FY2027). Full MCC list

Q00-Q07

Q00.0	Anencephaly
Q00.1	Craniorachischisis
Q00.2	Iniencephaly
Q04.0	Congenital malformations of corpus callosum
Q04.1	Arhinencephaly
Q04.2	Holoprosencephaly
Q04.3	Other reduction deformities of brain

Q20.0	Common arterial trunk
Q20.1	Double outlet right ventricle
Q20.2	Double outlet left ventricle
Q20.3	Discordant ventriculoarterial connection
Q20.4	Double inlet ventricle
Q21.3	Tetralogy of Fallot
Q22.0	Pulmonary valve atresia
Q22.4	Congenital tricuspid stenosis
Q22.5	Ebstein's anomaly
Q22.6	Hypoplastic right heart syndrome
Q22.8	Other congenital malformations of tricuspid valve
Q22.9	Congenital malformation of tricuspid valve, unspecified
Q23.4	Hypoplastic left heart syndrome
Q24.2	Cor triatriatum
Q24.4	Congenital subaortic stenosis
Q24.6	Congenital heart block
Q25.5	Atresia of pulmonary artery
Q25.6	Stenosis of pulmonary artery
Q25.71	Coarctation of pulmonary artery
Q25.72	Congenital pulmonary arteriovenous malformation
Q25.79	Other congenital malformations of pulmonary artery
Q28.2	Arteriovenous malformation of cerebral vessels
Q28.3	Other malformations of cerebral vessels

Q33.2	Sequestration of lung
Q33.3	Agenesis of lung
Q33.6	Congenital hypoplasia and dysplasia of lung

Q39.0	Atresia of esophagus without fistula
Q39.1	Atresia of esophagus with tracheo-esophageal fistula
Q39.2	Congenital tracheo-esophageal fistula without atresia
Q39.3	Congenital stenosis and stricture of esophagus
Q39.4	Esophageal web
Q44.2	Atresia of bile ducts
Q44.3	Congenital stenosis and stricture of bile ducts

Q79.0	Congenital diaphragmatic hernia
Q79.1	Other congenital malformations of diaphragm
Q79.2	Exomphalos
Q79.3	Gastroschisis
Q79.4	Prune belly syndrome
Q79.51	Congenital hernia of bladder
Q79.59	Other congenital malformations of abdominal wall

Conjoined twins

Velo-cardio-facial syndrome