ED074

Major Diagnostic Categories. The Major Diagnostic Categories (MDC) are formed by dividing all possible principal diagnoses into 25 mutually exclusive diagnosis areas.

0 = Ungroupable

1 = Nervous System

2 = Eye

3 = Ear, Nose, Mouth, and Throat

4 = Respiratory System

5 = Circulatory System

6 = Digestive System

7 = Hepatobiliary System and Pancreas

8 = Musculoskeletal System and Connective Tissue

9 = Skin, Subcutaneous Tissue, and Breast

10 = Endocrine, Nutritional, and Metabolic System

11 = Kidney and Urinary Tract

12 = Male Reproductive System

13 = Female Reproductive System

14 = Pregnancy, Childbirth and Puerperium

15 = Newborn and Other Neonates (Prenatal Period)

16 = Blood and Blood Forming Organs and Immunological Disorder

17 = Myeloprolifeative DDs (Poorly Differentiated Neoplasm)