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2007 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Digestive System 520-579 > Diseases Of Esophagus, Stomach, And Duodenum 530-538 > Diseases Of Esophagus 530.* > 2007 ICD-9-CM Diagnosis 530.0 Achalasia and cardiospasm  On October 1, 2008 the 2009 ICD-9-CM codes came into effect. Therefore, this code may be out of date. The 2009 version of ICD-9-CM 530.0 can be accessed here. A motility disorder of the ESOPHAGUS in which the LOWER ESOPHAGEAL SPHINCTER (near the CARDIA) fails to relax resulting in hypermotility, functional obstruction of the esophagus, and DYSPHAGIA. Achalasia is characterized by a grossly contorted and dilated esophagus (megaesophagus). 530.0 is a specific code that can be used to specify a diagnosis 530.0 contains 14 index entries View the ICD-9-CM Volume 1 530.* hierarchy 530.0 also known as: Achalasia (of cardia) Aperistalsis of esophagus Megaesophagus 530.0 excludes: congenital cardiospasm (750.7) Index entries containing 530.0: Achalasia 530.0 cardia 530.0 digestive organs congenital NEC 751.8 esophagus 530.0 pelvirectal 751.3 psychogenic 306.4 pylorus 750.5 sphincteral NEC 564.89 Aperistalsis, esophagus 530.0 Cardiospasm (esophagus) (reflex) (stomach) 530.0 congenital 750.7 Dilatation esophagus 530.89 due to achalasia 530.0 cardiospasm 530.0 Esophagectasis 530.89 due to cardiospasm 530.0 Incompetency, incompetence, incompetent cardiac (orifice) 530.0 valve - see Endocarditis esophagogastric (junction) (sphincter) 530.0 Megaesophagus (functional) 530.0 congenital 750.4 Megaloesophagus (functional) 530.0 congenital 750.4 Spasm, spastic, spasticity (see also condition) 781.0 cardia 530.0 Syndrome - see also Disease gastroesophageal junction 530.0