ICD-9-CM
01-05 Operations on the nervous system
06-07 Operations on the endocrine system
08-16 Operations of the eye
18-20 Operations of the ear
21 Operation on nose
22 Operations on nasal sinuses
25 Operations on tongue
26 Operations on salivary glands and ducts
27 Other operations on mouth and face
28 Operations on tonsils and adenoids
29 Operations on pharynx
30-34 Operations of the respiratory system
35-39 Operations on the cardiovascular system
40-41 Operations on the hemic and lymphatic system
42-54 Operations on the digestive system
55-59 Operations on the urinary system
60-64 Operations on the male genital organs
65-71 Operations on the female genital organs
72-75 Obstetrical procedures
76-84 Operations on the musculoskeletal system
85-86 ( ) Operations on the integumentary system