Diagnostic code
781 — Signs and Symptoms Not Yet Diagnosed: Leg cramps, leg pain, muscle pain, joint pain, arthralgia, joint swelling, masses
781 is an OHIP diagnostic code used on Ontario Health Insurance Plan claims. Signs and Symptoms Not Yet Diagnosed: Leg cramps, leg pain, muscle pain, joint pain, arthralgia, joint swelling, masses.
- Code
- 781
- Description
- Signs and Symptoms Not Yet Diagnosed: Leg cramps, leg pain, muscle pain, joint pain, arthralgia, joint swelling, masses
Updated October 26, 2026
781 is the OHIP diagnostic code for joint and limb symptoms not yet diagnosed: joint pain, muscle pain, leg pain, leg cramps and joint swelling.
Conditions billed under this code
- Hip pain
- Knee pain
- Shoulder pain
- Joint pain
- Muscle pain
What it covers
The Ministry lists 781 as 'Signs and Symptoms Not Yet Diagnosed: Leg cramps, leg pain, muscle pain, joint pain, arthralgia, joint swelling, masses' in the Musculoskeletal System chapter. It appears again under Symptoms, Signs and Ill-Defined Conditions as 'Arthralgia'.
Use it for hip, knee or shoulder pain while the cause is still unknown.
Once there's a diagnosis, use its code: 715 osteoarthritis, 714 rheumatoid arthritis, 727 bursitis, 718 a meniscus or cartilage tear, 840 a shoulder sprain, 821 a hip fracture, 274 gout. Low back pain is 724, and a neck or low back strain after an injury is 847.
Related codes: 715, 714, 727, 718, 724, 780
Sources
APEX flags claims whose diagnostic code does not fit the service billed before they come back rejected. See how APEX works · Pricing