Validation of administrative codes for calcium pyrophosphate deposition: a Veterans Administration study.

Background: Despite high prevalence, progress in calcium pyrophosphate deposition (CPPD) has been limited by poor awareness and absence of validated approaches to study it in large data sets.

Objectives: We aimed to determine the accuracy of administrative codes for the diagnosis of CPPD as a foundational step for future studies.

Methods: We identified all patients with an International Classification of Diseases, Ninth Revision, Clinical Modification code for chondrocalcinosis (712.

Shoulder symptoms and function in geriatric patients.

Background And Purpose: Musculoskeletal problems, including shoulder pain, are common in the general population and are often cited as reasons for physician visits. Although many risk factors for shoulder pain are postulated, the effects of shoulder pain on functional level and perceived quality of life are poorly characterized in older adults. In this study, we set out to determine the prevalence and impact of shoulder symptoms and dysfunction in an older adult veteran population.