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M12 Other and unspecified arthropathy

ICD-10-CM category M12 sits in Chapter 13 (Diseases of the musculoskeletal system and connective tissue, M00-M99). It contains 169 billable codes for FY2027, effective October 1, 2026 to September 30, 2027. Always code to the most specific code available: a code with more characters that describes the diagnosis more precisely takes priority over a shorter one.

Subcategories

M12.0 Chronic postrheumatic arthropathy [Jaccoud]M12.01 Chronic postrheumatic arthropathy [Jaccoud], shoulderM12.02 Chronic postrheumatic arthropathy [Jaccoud], elbowM12.03 Chronic postrheumatic arthropathy [Jaccoud], wristM12.04 Chronic postrheumatic arthropathy [Jaccoud], handM12.05 Chronic postrheumatic arthropathy [Jaccoud], hipM12.06 Chronic postrheumatic arthropathy [Jaccoud], kneeM12.07 Chronic postrheumatic arthropathy [Jaccoud], ankle and footM12.1 Kaschin-Beck diseaseM12.11 Kaschin-Beck disease, shoulderM12.12 Kaschin-Beck disease, elbowM12.13 Kaschin-Beck disease, wristM12.14 Kaschin-Beck disease, handM12.15 Kaschin-Beck disease, hipM12.16 Kaschin-Beck disease, kneeM12.17 Kaschin-Beck disease, ankle and footM12.2 Villonodular synovitis (pigmented)M12.21 Villonodular synovitis (pigmented), shoulderM12.22 Villonodular synovitis (pigmented), elbowM12.23 Villonodular synovitis (pigmented), wristM12.24 Villonodular synovitis (pigmented), handM12.25 Villonodular synovitis (pigmented), hipM12.26 Villonodular synovitis (pigmented), kneeM12.27 Villonodular synovitis (pigmented), ankle and footM12.3 Palindromic rheumatismM12.31 Palindromic rheumatism, shoulderM12.32 Palindromic rheumatism, elbowM12.33 Palindromic rheumatism, wristM12.34 Palindromic rheumatism, handM12.35 Palindromic rheumatism, hipM12.36 Palindromic rheumatism, kneeM12.37 Palindromic rheumatism, ankle and footM12.4 Intermittent hydrarthrosisM12.41 Intermittent hydrarthrosis, shoulderM12.42 Intermittent hydrarthrosis, elbowM12.43 Intermittent hydrarthrosis, wristM12.44 Intermittent hydrarthrosis, handM12.45 Intermittent hydrarthrosis, hipM12.46 Intermittent hydrarthrosis, kneeM12.47 Intermittent hydrarthrosis, ankle and foot

Billable codes in M12

CodeDescription
M12.00Chronic postrheumatic arthropathy [Jaccoud], unspecified site
M12.011Chronic postrheumatic arthropathy [Jaccoud], right shoulder
M12.012Chronic postrheumatic arthropathy [Jaccoud], left shoulder
M12.019Chronic postrheumatic arthropathy [Jaccoud], unspecified shoulder
M12.021Chronic postrheumatic arthropathy [Jaccoud], right elbow
M12.022Chronic postrheumatic arthropathy [Jaccoud], left elbow
M12.029Chronic postrheumatic arthropathy [Jaccoud], unspecified elbow
M12.031Chronic postrheumatic arthropathy [Jaccoud], right wrist
M12.032Chronic postrheumatic arthropathy [Jaccoud], left wrist
M12.039Chronic postrheumatic arthropathy [Jaccoud], unspecified wrist
M12.041Chronic postrheumatic arthropathy [Jaccoud], right hand
M12.042Chronic postrheumatic arthropathy [Jaccoud], left hand
M12.049Chronic postrheumatic arthropathy [Jaccoud], unspecified hand
M12.051Chronic postrheumatic arthropathy [Jaccoud], right hip
M12.052Chronic postrheumatic arthropathy [Jaccoud], left hip
M12.059Chronic postrheumatic arthropathy [Jaccoud], unspecified hip
M12.061Chronic postrheumatic arthropathy [Jaccoud], right knee
M12.062Chronic postrheumatic arthropathy [Jaccoud], left knee
M12.069Chronic postrheumatic arthropathy [Jaccoud], unspecified knee
M12.071Chronic postrheumatic arthropathy [Jaccoud], right ankle and foot
M12.072Chronic postrheumatic arthropathy [Jaccoud], left ankle and foot
M12.079Chronic postrheumatic arthropathy [Jaccoud], unspecified ankle and foot
M12.08Chronic postrheumatic arthropathy [Jaccoud], other specified site
M12.09Chronic postrheumatic arthropathy [Jaccoud], multiple sites
M12.10Kaschin-Beck disease, unspecified site
M12.111Kaschin-Beck disease, right shoulder
M12.112Kaschin-Beck disease, left shoulder
M12.119Kaschin-Beck disease, unspecified shoulder
M12.121Kaschin-Beck disease, right elbow
M12.122Kaschin-Beck disease, left elbow
M12.129Kaschin-Beck disease, unspecified elbow
M12.131Kaschin-Beck disease, right wrist
M12.132Kaschin-Beck disease, left wrist
M12.139Kaschin-Beck disease, unspecified wrist
M12.141Kaschin-Beck disease, right hand
M12.142Kaschin-Beck disease, left hand
M12.149Kaschin-Beck disease, unspecified hand
M12.151Kaschin-Beck disease, right hip
M12.152Kaschin-Beck disease, left hip
M12.159Kaschin-Beck disease, unspecified hip
M12.161Kaschin-Beck disease, right knee
M12.162Kaschin-Beck disease, left knee
M12.169Kaschin-Beck disease, unspecified knee
M12.171Kaschin-Beck disease, right ankle and foot
M12.172Kaschin-Beck disease, left ankle and foot
M12.179Kaschin-Beck disease, unspecified ankle and foot
M12.18Kaschin-Beck disease, vertebrae
M12.19Kaschin-Beck disease, multiple sites
M12.20Villonodular synovitis (pigmented), unspecified site
M12.211Villonodular synovitis (pigmented), right shoulder
M12.212Villonodular synovitis (pigmented), left shoulder
M12.219Villonodular synovitis (pigmented), unspecified shoulder
M12.221Villonodular synovitis (pigmented), right elbow
M12.222Villonodular synovitis (pigmented), left elbow
M12.229Villonodular synovitis (pigmented), unspecified elbow
M12.231Villonodular synovitis (pigmented), right wrist
M12.232Villonodular synovitis (pigmented), left wrist
M12.239Villonodular synovitis (pigmented), unspecified wrist
M12.241Villonodular synovitis (pigmented), right hand
M12.242Villonodular synovitis (pigmented), left hand
M12.249Villonodular synovitis (pigmented), unspecified hand
M12.251Villonodular synovitis (pigmented), right hip
M12.252Villonodular synovitis (pigmented), left hip
M12.259Villonodular synovitis (pigmented), unspecified hip
M12.261Villonodular synovitis (pigmented), right knee
M12.262Villonodular synovitis (pigmented), left knee
M12.269Villonodular synovitis (pigmented), unspecified knee
M12.271Villonodular synovitis (pigmented), right ankle and foot
M12.272Villonodular synovitis (pigmented), left ankle and foot
M12.279Villonodular synovitis (pigmented), unspecified ankle and foot
M12.28Villonodular synovitis (pigmented), other specified site
M12.29Villonodular synovitis (pigmented), multiple sites
M12.30Palindromic rheumatism, unspecified site
M12.311Palindromic rheumatism, right shoulder
M12.312Palindromic rheumatism, left shoulder
M12.319Palindromic rheumatism, unspecified shoulder
M12.321Palindromic rheumatism, right elbow
M12.322Palindromic rheumatism, left elbow
M12.329Palindromic rheumatism, unspecified elbow
M12.331Palindromic rheumatism, right wrist
M12.332Palindromic rheumatism, left wrist
M12.339Palindromic rheumatism, unspecified wrist
M12.341Palindromic rheumatism, right hand
M12.342Palindromic rheumatism, left hand
M12.349Palindromic rheumatism, unspecified hand
M12.351Palindromic rheumatism, right hip
M12.352Palindromic rheumatism, left hip
M12.359Palindromic rheumatism, unspecified hip
M12.361Palindromic rheumatism, right knee
M12.362Palindromic rheumatism, left knee
M12.369Palindromic rheumatism, unspecified knee
M12.371Palindromic rheumatism, right ankle and foot
M12.372Palindromic rheumatism, left ankle and foot
M12.379Palindromic rheumatism, unspecified ankle and foot
M12.38Palindromic rheumatism, other specified site
M12.39Palindromic rheumatism, multiple sites
M12.40Intermittent hydrarthrosis, unspecified site
M12.411Intermittent hydrarthrosis, right shoulder
M12.412Intermittent hydrarthrosis, left shoulder
M12.419Intermittent hydrarthrosis, unspecified shoulder
M12.421Intermittent hydrarthrosis, right elbow
M12.422Intermittent hydrarthrosis, left elbow
M12.429Intermittent hydrarthrosis, unspecified elbow
M12.431Intermittent hydrarthrosis, right wrist
M12.432Intermittent hydrarthrosis, left wrist
M12.439Intermittent hydrarthrosis, unspecified wrist
M12.441Intermittent hydrarthrosis, right hand
M12.442Intermittent hydrarthrosis, left hand
M12.449Intermittent hydrarthrosis, unspecified hand
M12.451Intermittent hydrarthrosis, right hip
M12.452Intermittent hydrarthrosis, left hip
M12.459Intermittent hydrarthrosis, unspecified hip
M12.461Intermittent hydrarthrosis, right knee
M12.462Intermittent hydrarthrosis, left knee
M12.469Intermittent hydrarthrosis, unspecified knee
M12.471Intermittent hydrarthrosis, right ankle and foot
M12.472Intermittent hydrarthrosis, left ankle and foot
M12.479Intermittent hydrarthrosis, unspecified ankle and foot
M12.48Intermittent hydrarthrosis, other site
M12.49Intermittent hydrarthrosis, multiple sites
M12.50Traumatic arthropathy, unspecified site
M12.511Traumatic arthropathy, right shoulder
M12.512Traumatic arthropathy, left shoulder
M12.519Traumatic arthropathy, unspecified shoulder
M12.521Traumatic arthropathy, right elbow
M12.522Traumatic arthropathy, left elbow
M12.529Traumatic arthropathy, unspecified elbow
M12.531Traumatic arthropathy, right wrist
M12.532Traumatic arthropathy, left wrist
M12.539Traumatic arthropathy, unspecified wrist
M12.541Traumatic arthropathy, right hand
M12.542Traumatic arthropathy, left hand
M12.549Traumatic arthropathy, unspecified hand
M12.551Traumatic arthropathy, right hip
M12.552Traumatic arthropathy, left hip
M12.559Traumatic arthropathy, unspecified hip
M12.561Traumatic arthropathy, right knee
M12.562Traumatic arthropathy, left knee
M12.569Traumatic arthropathy, unspecified knee
M12.571Traumatic arthropathy, right ankle and foot
M12.572Traumatic arthropathy, left ankle and foot
M12.579Traumatic arthropathy, unspecified ankle and foot
M12.58Traumatic arthropathy, other specified site
M12.59Traumatic arthropathy, multiple sites
M12.80Other specific arthropathies, not elsewhere classified, unspecified site
M12.811Other specific arthropathies, not elsewhere classified, right shoulder
M12.812Other specific arthropathies, not elsewhere classified, left shoulder
M12.819Other specific arthropathies, not elsewhere classified, unspecified shoulder
M12.821Other specific arthropathies, not elsewhere classified, right elbow
M12.822Other specific arthropathies, not elsewhere classified, left elbow
M12.829Other specific arthropathies, not elsewhere classified, unspecified elbow
M12.831Other specific arthropathies, not elsewhere classified, right wrist
M12.832Other specific arthropathies, not elsewhere classified, left wrist
M12.839Other specific arthropathies, not elsewhere classified, unspecified wrist
M12.841Other specific arthropathies, not elsewhere classified, right hand
M12.842Other specific arthropathies, not elsewhere classified, left hand
M12.849Other specific arthropathies, not elsewhere classified, unspecified hand
M12.851Other specific arthropathies, not elsewhere classified, right hip
M12.852Other specific arthropathies, not elsewhere classified, left hip
M12.859Other specific arthropathies, not elsewhere classified, unspecified hip
M12.861Other specific arthropathies, not elsewhere classified, right knee
M12.862Other specific arthropathies, not elsewhere classified, left knee
M12.869Other specific arthropathies, not elsewhere classified, unspecified knee
M12.871Other specific arthropathies, not elsewhere classified, right ankle and foot
M12.872Other specific arthropathies, not elsewhere classified, left ankle and foot
M12.879Other specific arthropathies, not elsewhere classified, unspecified ankle and foot
M12.88Other specific arthropathies, not elsewhere classified, other specified site
M12.89Other specific arthropathies, not elsewhere classified, multiple sites
M12.9Arthropathy, unspecified

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