Table 3.

Primary or Secondary Diagnoses of Most Common Symptoms in Patients with Secondary and No diagnosis of JDM from 2002 to 2012

Rank	ICD-9-CM Codea	Diagnosis	Weighted Frequency	Row Prevalence [95% CI]
710.3 as Secondary Diagnosis
1	782.1	Rash	44	1.87 [0.65–3.10]
2	728.87	Muscle Weakness	40	1.72 [0.39–3.05]
3	729.1	Muscle Pain	30	1.30 [0.33–2.28]
4	780.6	Fever	96	4.14 [2.26–6.01]
5	787.20	Dysphagia	45	1.94 [0.43–3.46]
6	784.42	Dysphonia	0	–
7	789.00	Abdominal Pain	23	0.97 [0.11–1.83]
8	CCS 204	Arthritis NOS	80	3.44 [1.86–5.02]
9	709.3	Calcinosis	27	1.14 [0.06–2.23]
10	578.1	Melena	8	0.36 [0.00–0.86]
11	783.0	Anorexia	10	0.43 [0.00–1.04]
No Diagnosis of 710.3
1	782.1	Rash	166,932	0.73 [0.68–0.77]
2	728.87	Muscle Weakness	8152	0.04 [0.03–0.04]
3	729.1	Muscle Pain	31,879	0.14 [0.13–0.15]
4	780.6	Fever	621,463	2.70 [2.53–2.87]
5	787.20	Dysphagia	64,240	0.28 [0.23–0.32]
6	784.42	Dysphonia	1836	0.01 [0.00–0.01]
7	789.00	Abdominal Pain	159,317	0.69 [0.65–0.73]
8	CCS 204	Arthritis NOS	136,958	0.59 [0.56–0.63]
9	709.3	Calcinosis	1025	0.0044 [0.0036–0.0053]
10	578.1	Melena	59,509	0.26 [0.24–0.28]
11	783.0	Anorexia	67,501	0.29 [0.25–0.33]

^aExcluded repeat diagnosis of JDM

ICD9-CM International Classification of Diseases, Ninth Revision, Clinical Modification; 95% CI 95% confidence interval; NOS Not Otherwise Specified