Sprain of other specified sites of sacroiliac region

This code signifies a sprain or ligamentous injury affecting specific, non-sacroiliac joint sites within the broader sacroiliac region. It indicates trauma to the supporting structures around the sacrum and ilium, excluding the joint capsule itself. This typically involves strains or tears of ligaments such as the sacrotuberous or sacrospinous ligaments.

Use this code for documented sprains of ligaments or other soft tissues in the sacroiliac region, explicitly excluding the sacroiliac joint. Documentation should specify the affected ligament or a general "sacroiliac region sprain" when the sacroiliac joint itself is not implicated. This code is appropriate when the provider's assessment points to a sprain of the surrounding connective tissues rather than an intra-articular injury.

• Differentiate carefully from sacroiliac joint sprains (e.g., 846.1) which involve the joint capsule.
• Ensure documentation specifies "sacroiliac region" and not just "sacrum" or "ilium" to support this code.
• Consider an additional E-code if the cause of the sprain (e.g., fall, sports injury) is known.