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. Author manuscript; available in PMC: 2020 Sep 9.
Published in final edited form as: Int J Healthc Inf Syst Inform. 2018;13(2):1–12. doi: 10.4018/ijhisi.2018040101

Table 4.

Ranking and frequency of diagnoses, by patients potentially with rare diseases, by type of encounter, in the combined administrative and clinical datasets; South Carolina, 2009–2014*

Spina Bifida (n) Muscular Dystrophy (n) Fragile X (n)
Emergency Department
1 Chronic ulcer of skin (1103) General symptoms (238) General symptoms (36)
2 Symptoms involving head and neck (722) Symptoms involving respiratory system / chest(215) Acute upper respiratory infections of multiple sites (32)
3 Other disorders of urethra and urinary tract (682) Other symptoms involving abdomen and pelvis (184) Attention to artificial openings (29)
4 Migraine (646) Other disorders of urethra and urinary tract (180) Epilepsy and recurrent seizures (23)
5 Other symptoms involving abdomen / pelvis (497) Symptoms involving digestive system (172) Other congenital anomalies of upper alimentary tract (22)
6 Symptoms involving respiratory system / chest (457) Schizophrenic disorders (140) Diseases of hard tissues of teeth (20)
7 Other and unspecified disorders of back (446) Other and unspecified disorders of back (126) Other symptoms involving abdomen and pelvis (19)
8 General symptoms (403) Diabetes mellitus (110) Acute pharyngitis (16)
9 Symptoms involving digestive system (308) Pneumonia, organism unspecified (109) Diseases of esophagus (16)
10 Other disorders of bladder (339) Chronic ulcer of skin (106) Cellulitis and abscess of face (16)
Inpatient
1 Complications peculiar to certain specified procedures (212) Care involving use of rehabilitation procedures (79)
2 Chronic ulcer of skin (125) Other diseases of lung (54)
3 Other disorders of urethra and urinary tract (123) Pneumonia, organism unspecified (52)
4 Spina bifida (119) Single liveborn (42)
5 Other conditions of brain (100) General symptoms (37)
6 Single liveborn (98) Muscular dystrophies and other myopathies (35)
7 Other congenital anomalies of nervous system (84) Other disorders of urethra and urinary tract (32)
8 Other cellulitis and abscess (82) Symptoms involving respiratory system / chest(28)
9 Septicemia (73) Complications peculiar to certain procedures (27)
10 General symptoms (72) Other cellulitis and abscess (26)
*

Diagnostic categories using ICD-9 codes and the Clinical Classification Software (CCS) system developed by the Healthcare Cost and Utilization Project: http://www.hcup-us.aheq.gov/toolssoftware/ccs/ccs.jsp.

Inpatient diagnoses are not displayed for Fragile X due to small cell sizes, to ensure privacy