| M1229 | Villonodular synovitis (pigmented), multiple sites |
| M123 | Palindromic rheumatism |
| M1230 | Palindromic rheumatism, unspecified site |
| M1231 | Palindromic rheumatism, shoulder |
| M12311 | Palindromic rheumatism, right shoulder |
| M12312 | Palindromic rheumatism, left shoulder |
| M12319 | Palindromic rheumatism, unspecified shoulder |
| M1232 | Palindromic rheumatism, elbow |
| M12321 | Palindromic rheumatism, right elbow |
| M12322 | Palindromic rheumatism, left elbow |
| M12329 | Palindromic rheumatism, unspecified elbow |
| M1233 | Palindromic rheumatism, wrist |
| M12331 | Palindromic rheumatism, right wrist |
| M12332 | Palindromic rheumatism, left wrist |
| M12339 | Palindromic rheumatism, unspecified wrist |
| M1234 | Palindromic rheumatism, hand |
| M12341 | Palindromic rheumatism, right hand |
| M12342 | Palindromic rheumatism, left hand |
| M12349 | Palindromic rheumatism, unspecified hand |
| M1235 | Palindromic rheumatism, hip |
| M12351 | Palindromic rheumatism, right hip |
| M12352 | Palindromic rheumatism, left hip |
| M12359 | Palindromic rheumatism, unspecified hip |
| M1236 | Palindromic rheumatism, knee |
| M12361 | Palindromic rheumatism, right knee |
| M12362 | Palindromic rheumatism, left knee |
| M12369 | Palindromic rheumatism, unspecified knee |
| M1237 | Palindromic rheumatism, ankle and foot |
| M12371 | Palindromic rheumatism, right ankle and foot |
| M12372 | Palindromic rheumatism, left ankle and foot |
| M12379 | Palindromic rheumatism, unspecified ankle and foot |
| M1238 | Palindromic rheumatism, other specified site |
| M1239 | Palindromic rheumatism, multiple sites |
| M124 | Intermittent hydrarthrosis |
| M1240 | Intermittent hydrarthrosis, unspecified site |
| M1241 | Intermittent hydrarthrosis, shoulder |
| M12411 | Intermittent hydrarthrosis, right shoulder |
| M12412 | Intermittent hydrarthrosis, left shoulder |
| M12419 | Intermittent hydrarthrosis, unspecified shoulder |
| M1242 | Intermittent hydrarthrosis, elbow |
| M12421 | Intermittent hydrarthrosis, right elbow |
| M12422 | Intermittent hydrarthrosis, left elbow |
| M12429 | Intermittent hydrarthrosis, unspecified elbow |
| M1243 | Intermittent hydrarthrosis, wrist |
| M12431 | Intermittent hydrarthrosis, right wrist |
| M12432 | Intermittent hydrarthrosis, left wrist |
| M12439 | Intermittent hydrarthrosis, unspecified wrist |
| M1244 | Intermittent hydrarthrosis, hand |
| M12441 | Intermittent hydrarthrosis, right hand |
| M12442 | Intermittent hydrarthrosis, left hand |