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5013
§ 4.71a Schedule of ratings—musculoskeletal system.

Osteoporosis residuals

Reduced bone density (fragile bones) potentially due to malnutrition and captivity stress

What the rating means

Osteoporosis residuals (diagnostic code 5013) does not have its own set of rating percentages. Instead, VA rates this condition based on whatever residual effects the osteoporosis has caused — most commonly fractures, joint damage, or the need for a prosthetic joint replacement. The rating follows whichever diagnostic code covers that specific residual condition, such as the codes for prosthetic joint replacement (diagnostic codes 5051–5056) or for limitation of motion or ankylosis of a joint. Because the actual rating depends entirely on the nature of your residuals, the percentage assigned will reflect the criteria of the applicable code rather than a fixed scale unique to osteoporosis. VA will evaluate each affected body part separately under the rules that apply to that part.

Evidence that helps

Because the rating follows the residual condition rather than osteoporosis itself, useful evidence depends on which residuals you have. If a joint was surgically replaced, records showing the implantation date, surgical reports, and discharge summaries help establish the timeline for post-surgical rating periods. For joint or bone residuals rated on range of motion, examination findings that measure degrees of movement or document ankylosis are directly relevant. Imaging such as X-rays or bone scans can document fractures, bone loss, or hardware placement. If ankylosis of a finger or thumb is involved, examination findings measuring the gap between fingertips and the palm — or between the thumb pad and fingers — matter because the regulation uses a two-inch threshold to distinguish favorable from unfavorable ankylosis. Statements from you or others describing how residual symptoms affect physical tasks at work or at home can support the overall picture of functional loss.

Secondary conditions

Conditions that are often caused or made worse by this one. If you have any of these, they may be claimable as secondary service connection.