M12 Other and unspecified arthropathy

⚠ Non-Billable ICD-10-CM 2026
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The ICD-10-CM code for Other and unspecified arthropathy is M12 (FY2026). It is a non-billable category code — select a more specific code below for claims.

Classification

Section
M05-M14: Inflammatory polyarthropathies (M05-M14)
Category M12
226 codes (169 billable)
FY2026 Status
Stable since FY2024
Excludes1
Not coded here. These conditions should NOT be coded together with M12.
  • arthrosis (M15-M19)
  • cricoarytenoid arthropathy (J38.7)

Official Coding Guidelines

Osteoporosis without pathological fracture (M81)

Category M81, Osteoporosis without current pathological fracture, is for use for patients with osteoporosis who do not currently have a pathologic fracture due to the osteoporosis, even if they have had a fracture in the past. For patients with a history of osteoporosis fractures, status code Z87.310, Personal history of (healed) osteoporosis fracture, should follow the code from M81.

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.13.d.1
Osteoporosis with current pathological fracture (M80)

Category M80, Osteoporosis with current pathological fracture, is for patients who have a current pathologic fracture at the time of an encounter. The codes under M80 identify the site of the fracture. A code from category M80, not a traumatic fracture code, should be used for any patient with known osteoporosis who suffers a fracture, even if the patient had a minor fall or trauma, if that fall or trauma would not usually break a normal, healthy bone.

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.13.d.2

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

Cite This Page

Reference M12 with the canonical source and edition:

M12 — Other and unspecified arthropathy. ICD-10 Coding Pro (ICD-10-CM FY2026). https://icd10codingpro.com/codes/M12

Canonical URL: https://icd10codingpro.com/codes/M12

Related Codes

All Codes in M12

Every most-specific code under M12 Other and unspecified arthropathy (169 codes):

Show the complete M12 code list
M12.00 Chronic postrheumatic arthropathy [Jaccoud], unspecified site M12.011 Chronic postrheumatic arthropathy [Jaccoud], right shoulder M12.012 Chronic postrheumatic arthropathy [Jaccoud], left shoulder M12.019 Chronic postrheumatic arthropathy [Jaccoud], unspecified shoulder M12.021 Chronic postrheumatic arthropathy [Jaccoud], right elbow M12.022 Chronic postrheumatic arthropathy [Jaccoud], left elbow M12.029 Chronic postrheumatic arthropathy [Jaccoud], unspecified elbow M12.031 Chronic postrheumatic arthropathy [Jaccoud], right wrist M12.032 Chronic postrheumatic arthropathy [Jaccoud], left wrist M12.039 Chronic postrheumatic arthropathy [Jaccoud], unspecified wrist M12.041 Chronic postrheumatic arthropathy [Jaccoud], right hand M12.042 Chronic postrheumatic arthropathy [Jaccoud], left hand M12.049 Chronic postrheumatic arthropathy [Jaccoud], unspecified hand M12.051 Chronic postrheumatic arthropathy [Jaccoud], right hip M12.052 Chronic postrheumatic arthropathy [Jaccoud], left hip M12.059 Chronic postrheumatic arthropathy [Jaccoud], unspecified hip M12.061 Chronic postrheumatic arthropathy [Jaccoud], right knee M12.062 Chronic postrheumatic arthropathy [Jaccoud], left knee M12.069 Chronic postrheumatic arthropathy [Jaccoud], unspecified knee M12.071 Chronic postrheumatic arthropathy [Jaccoud], right ankle and foot M12.072 Chronic postrheumatic arthropathy [Jaccoud], left ankle and foot M12.079 Chronic postrheumatic arthropathy [Jaccoud], unspecified ankle and foot M12.08 Chronic postrheumatic arthropathy [Jaccoud], other specified site M12.09 Chronic postrheumatic arthropathy [Jaccoud], multiple sites M12.10 Kaschin-Beck disease, unspecified site M12.111 Kaschin-Beck disease, right shoulder M12.112 Kaschin-Beck disease, left shoulder M12.119 Kaschin-Beck disease, unspecified shoulder M12.121 Kaschin-Beck disease, right elbow M12.122 Kaschin-Beck disease, left elbow M12.129 Kaschin-Beck disease, unspecified elbow M12.131 Kaschin-Beck disease, right wrist M12.132 Kaschin-Beck disease, left wrist M12.139 Kaschin-Beck disease, unspecified wrist M12.141 Kaschin-Beck disease, right hand M12.142 Kaschin-Beck disease, left hand M12.149 Kaschin-Beck disease, unspecified hand M12.151 Kaschin-Beck disease, right hip M12.152 Kaschin-Beck disease, left hip M12.159 Kaschin-Beck disease, unspecified hip M12.161 Kaschin-Beck disease, right knee M12.162 Kaschin-Beck disease, left knee M12.169 Kaschin-Beck disease, unspecified knee M12.171 Kaschin-Beck disease, right ankle and foot M12.172 Kaschin-Beck disease, left ankle and foot M12.179 Kaschin-Beck disease, unspecified ankle and foot M12.18 Kaschin-Beck disease, vertebrae M12.19 Kaschin-Beck disease, multiple sites M12.20 Villonodular synovitis (pigmented), unspecified site M12.211 Villonodular synovitis (pigmented), right shoulder M12.212 Villonodular synovitis (pigmented), left shoulder M12.219 Villonodular synovitis (pigmented), unspecified shoulder M12.221 Villonodular synovitis (pigmented), right elbow M12.222 Villonodular synovitis (pigmented), left elbow M12.229 Villonodular synovitis (pigmented), unspecified elbow M12.231 Villonodular synovitis (pigmented), right wrist M12.232 Villonodular synovitis (pigmented), left wrist M12.239 Villonodular synovitis (pigmented), unspecified wrist M12.241 Villonodular synovitis (pigmented), right hand M12.242 Villonodular synovitis (pigmented), left hand M12.249 Villonodular synovitis (pigmented), unspecified hand M12.251 Villonodular synovitis (pigmented), right hip M12.252 Villonodular synovitis (pigmented), left hip M12.259 Villonodular synovitis (pigmented), unspecified hip M12.261 Villonodular synovitis (pigmented), right knee M12.262 Villonodular synovitis (pigmented), left knee M12.269 Villonodular synovitis (pigmented), unspecified knee M12.271 Villonodular synovitis (pigmented), right ankle and foot M12.272 Villonodular synovitis (pigmented), left ankle and foot M12.279 Villonodular synovitis (pigmented), unspecified ankle and foot M12.28 Villonodular synovitis (pigmented), other specified site M12.29 Villonodular synovitis (pigmented), multiple sites M12.30 Palindromic rheumatism, unspecified site M12.311 Palindromic rheumatism, right shoulder M12.312 Palindromic rheumatism, left shoulder M12.319 Palindromic rheumatism, unspecified shoulder M12.321 Palindromic rheumatism, right elbow M12.322 Palindromic rheumatism, left elbow M12.329 Palindromic rheumatism, unspecified elbow M12.331 Palindromic rheumatism, right wrist M12.332 Palindromic rheumatism, left wrist M12.339 Palindromic rheumatism, unspecified wrist M12.341 Palindromic rheumatism, right hand M12.342 Palindromic rheumatism, left hand M12.349 Palindromic rheumatism, unspecified hand M12.351 Palindromic rheumatism, right hip M12.352 Palindromic rheumatism, left hip M12.359 Palindromic rheumatism, unspecified hip M12.361 Palindromic rheumatism, right knee M12.362 Palindromic rheumatism, left knee M12.369 Palindromic rheumatism, unspecified knee M12.371 Palindromic rheumatism, right ankle and foot M12.372 Palindromic rheumatism, left ankle and foot M12.379 Palindromic rheumatism, unspecified ankle and foot M12.38 Palindromic rheumatism, other specified site M12.39 Palindromic rheumatism, multiple sites M12.40 Intermittent hydrarthrosis, unspecified site M12.411 Intermittent hydrarthrosis, right shoulder M12.412 Intermittent hydrarthrosis, left shoulder M12.419 Intermittent hydrarthrosis, unspecified shoulder M12.421 Intermittent hydrarthrosis, right elbow M12.422 Intermittent hydrarthrosis, left elbow M12.429 Intermittent hydrarthrosis, unspecified elbow M12.431 Intermittent hydrarthrosis, right wrist M12.432 Intermittent hydrarthrosis, left wrist M12.439 Intermittent hydrarthrosis, unspecified wrist M12.441 Intermittent hydrarthrosis, right hand M12.442 Intermittent hydrarthrosis, left hand M12.449 Intermittent hydrarthrosis, unspecified hand M12.451 Intermittent hydrarthrosis, right hip M12.452 Intermittent hydrarthrosis, left hip M12.459 Intermittent hydrarthrosis, unspecified hip M12.461 Intermittent hydrarthrosis, right knee M12.462 Intermittent hydrarthrosis, left knee M12.469 Intermittent hydrarthrosis, unspecified knee M12.471 Intermittent hydrarthrosis, right ankle and foot M12.472 Intermittent hydrarthrosis, left ankle and foot M12.479 Intermittent hydrarthrosis, unspecified ankle and foot M12.48 Intermittent hydrarthrosis, other site M12.49 Intermittent hydrarthrosis, multiple sites M12.50 Traumatic arthropathy, unspecified site M12.511 Traumatic arthropathy, right shoulder M12.512 Traumatic arthropathy, left shoulder M12.519 Traumatic arthropathy, unspecified shoulder M12.521 Traumatic arthropathy, right elbow M12.522 Traumatic arthropathy, left elbow M12.529 Traumatic arthropathy, unspecified elbow M12.531 Traumatic arthropathy, right wrist M12.532 Traumatic arthropathy, left wrist M12.539 Traumatic arthropathy, unspecified wrist M12.541 Traumatic arthropathy, right hand M12.542 Traumatic arthropathy, left hand M12.549 Traumatic arthropathy, unspecified hand M12.551 Traumatic arthropathy, right hip M12.552 Traumatic arthropathy, left hip M12.559 Traumatic arthropathy, unspecified hip M12.561 Traumatic arthropathy, right knee M12.562 Traumatic arthropathy, left knee M12.569 Traumatic arthropathy, unspecified knee M12.571 Traumatic arthropathy, right ankle and foot M12.572 Traumatic arthropathy, left ankle and foot M12.579 Traumatic arthropathy, unspecified ankle and foot M12.58 Traumatic arthropathy, other specified site M12.59 Traumatic arthropathy, multiple sites M12.80 Other specific arthropathies, not elsewhere classified, unspecified site M12.811 Other specific arthropathies, not elsewhere classified, right shoulder M12.812 Other specific arthropathies, not elsewhere classified, left shoulder M12.819 Other specific arthropathies, not elsewhere classified, unspecified shoulder M12.821 Other specific arthropathies, not elsewhere classified, right elbow M12.822 Other specific arthropathies, not elsewhere classified, left elbow M12.829 Other specific arthropathies, not elsewhere classified, unspecified elbow M12.831 Other specific arthropathies, not elsewhere classified, right wrist M12.832 Other specific arthropathies, not elsewhere classified, left wrist M12.839 Other specific arthropathies, not elsewhere classified, unspecified wrist M12.841 Other specific arthropathies, not elsewhere classified, right hand M12.842 Other specific arthropathies, not elsewhere classified, left hand M12.849 Other specific arthropathies, not elsewhere classified, unspecified hand M12.851 Other specific arthropathies, not elsewhere classified, right hip M12.852 Other specific arthropathies, not elsewhere classified, left hip M12.859 Other specific arthropathies, not elsewhere classified, unspecified hip M12.861 Other specific arthropathies, not elsewhere classified, right knee M12.862 Other specific arthropathies, not elsewhere classified, left knee M12.869 Other specific arthropathies, not elsewhere classified, unspecified knee M12.871 Other specific arthropathies, not elsewhere classified, right ankle and foot M12.872 Other specific arthropathies, not elsewhere classified, left ankle and foot M12.879 Other specific arthropathies, not elsewhere classified, unspecified ankle and foot M12.88 Other specific arthropathies, not elsewhere classified, other specified site M12.89 Other specific arthropathies, not elsewhere classified, multiple sites M12.9 Arthropathy, unspecified
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Reviewed by Prajwal Shrestha, CPC, CRC
Certified Professional Coder (CPC) and Certified Risk Adjustment Coder (CRC) · AAPC Member ID 01997614 · About · Editorial policy · Content last reviewed: 2025-10-01

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