Abstract: . . .  10-1-94. (See Coding Clinic , second quarter Revised: March 2006 Page 2 DRG 140 Page 2 ------------- 1995, pages 17-19.) Coding and sequencing guidelines for angina . . .
. . .  (See Coding Clinic , second quarter Revised: March 2006 Page 2 DRG 140 Page 2 ------------- 1995, pages 17-19.) Coding and sequencing guidelines for angina . . .
. . .  history of an MI three years ago and the angina is medically treated during the admission, the unstable angina , coded 411.1, is the principal diagnosis and a history of an MI, coded 412, is the secondary diagnosis. . . .
. . .  coded to the type of angina documented by the physician. Unstable angina is coded 411.1 and angina pectoris is coded 413.9. (See Coding Clinic , second quarter 1995, page 19, and Coding Clinic , fourth . . .
. . .  source for coding guidelines. Hospitals should follow the Coding Clinic guidelines to assure accuracy in ICD-9-CM coding and DRG assignment. Definition of Principal Diagnosis The principal diagnosis is . . .
. . .  the MI had occurred within eight weeks of the admission, the secondary diagnosis code would be 410.X2. (See Coding Clinic , volume 10, number 5 1993, pages 18-20 and 23.) Revised: March 2006  . . .
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