Correction to:Methods for identifying 30 chronic conditions: application to administrative data

Following publication of the original manuscript [1], the authors noted several errors in Table 1. Details of the requested corrections are shown below: 1. Chronic pain – added 3 ICD-10 codes to the far right column that are equivalent to the 3 corresponding codes in the ICD-9 column. Neither the ICD-9 nor the ICD-10 codes are used in Canadian data, but we have corrected this for completeness. We thank Mr. James Wilton for pointing this out. G89.0 for 338.0 central pain syndrome G89.2 for 338.2 chronic pain G89.4 for 338.4 chronic pain syndrome 2. Also for chronic pain – replaced 2 hospitalizations or 2 claims or 2 ACCS in 30 days or less with 2 hospitalizations or 2 claims or 2 ACCS in 30 days or more. We thank Ms. Feng Ye for pointing this out. 3. For Diabetes – replaced the reference to Hux 2005 with a reference to Hux 2002. 4. Myocardial infarction – replaced “1 hospitalization” with “1 most responsible hospitalization”. We thank Dr. Ping Liu for pointing this out. The correct version of Table 1 is included in this erratum with the changes marked in bold.