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Emergency Data

2005 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.


Category DescriptionTotalPercentage
Sprains and strains46,2786.46%
Superficial injury; contusion45,5506.36%
Wounds39,6005.53%
Other upper respiratory infections38,7615.41%
Abdominal pain27,0743.78%
Fractures25,5143.56%
Nonspecific chest pain22,0543.08%
Disorders of teeth and jaw (e.g.: cavities gingivitis/abscess)20,8262.91%
Spondylosis(spinal arthritis); intervertebral disc disorders; other back problems20,1562.82%
Otitis media (infection or inflammation of the middle ear) and related conditions16,8652.36%
Skin and subcutaneous tissue infections16,7032.33%
Chronic obstructive pulmonary disease and bronchiectasis15,2882.14%
Other injuries and conditions due to external causes (e.g.: foreign bodies/heat exhaustion)14,4592.02%
Other lower respiratory disease14,3472.00%
Other connective tissue disease14,0831.97%
Urinary tract infections14,0511.96%
Headache; including migraine13,8021.93%
Viral infection11,4041.59%
Allergic reactions10,2021.43%
Other non-traumatic joint disorders9,9541.39%
Pneumonia9,3831.31%
Asthma9,3621.31%
Other mental conditions9,1201.27%
Nausea and vomiting7,1901.00%
Cardiac dysrhythmias (abnormal heart rhythms)7,1481.00%
Other gastrointestinal disorders (e.g.: constipation/diarrhea/heartburn/abdominal mass)6,9000.96%
Other ear and sense organ disorders6,5790.92%
Other aftercare (e.g.: suture removal/attention to dressings/post surgery/follow-up exams)6,5760.92%
Anxiety; unexplained physical ailments or concerns; dissociative; and personality disorder6,5010.91%
Acute bronchitis6,3820.89%
All other203,75028.46%
Total715,86299.98%



Source: Maine Health Data Organization, 2007