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Emergency Data

2003 Most Common ICD9-CM Diagnosis Codes by Clinical Classification Software (CCS) by Visits Statewide
Clinical Classification Software (CCS) developed by Agency for Healthcare Research and Quality (AHRQ) clusters ICD9-CM diagnosis codes into clinically similar categories.


CCS Category DescriptionTotal VisitsPercentage
Sprains and strains44,8986.54%
Superficial injury; contusion44,6106.50%
Other upper respiratory infections42,4206.18%
Open wounds39,6565.78%
Fractures26,1313.81%
Abdominal pain23,4853.42%
Otitis media (infection or inflammation of the middle ear) and related conditions19,3592.82%
Nonspecific chest pain19,0672.78%
Disorders of teeth and jaw (eg: cavities/gingivitis/abscess)18,5482.70%
Spondylosis (spinal arthritis); intervertebral disc disorders; other back problems17,9402.61%
Chronic obstructive pulmonary disease14,1002.05%
Skin and subcutaneous tissue infections13,9872.04%
Urinary tract infections13,2771.93%
Other lower respiratory disease13,2161.93%
Other injuries and conditions due to external causes (eg: foreign bodies/heat exhaustion)12,9711.89%
Other connective tissue disease12,7971.86%
Headache; including migraine12,5961.84%
Viral infection11,8701.73%
Pneumonia 10,3051.50%
Allergic reactions9,8131.43%
Asthma9,3511.36%
Other non-traumatic joint disorders8,8931.30%
Other mental conditions8,5771.25%
Other aftercare (eg: suture removal/attention to dressings/post surgery/follow-up exams)7,9251.15%
Acute bronchitis6,6740.97%
Cardiac dysrhythmias (abnormal heart rhythms)6,4690.94%
Inflammation; infection of eye 6,3780.93%
Other ear and sense organ disorders6,1890.90%
Other gastrointestinal disorders (eg: intestinal disorder/constipation/diarrhea/heartburn/abdominal mass)6,1680.90%
Anxiety; unexplained physical ailments or concerns; dissociative; and personality disorder6,1200.89%
All other192,44928.04%
Total686,239100.00%



Source: Maine Health Data Organization, 2007