ICD-10-CM 2027
ICD-10 code for arthropathy
From the official ICD-10-CM alphabetic index entry “Arthropathy”. Page updated September 29, 2026.
About coding arthropathy
The ICD-10-CM code for arthropathy is M12.9 (Arthropathy, unspecified). The official index lists 154 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on M12.9.
Within M12, choose M12.9 (Arthropathy, unspecified) only when documentation doesn't support a more specific option: chronic postrheumatic arthropathy [Jaccoud] (M12.0), Kaschin-Beck disease (M12.1), Villonodular synovitis (pigmented) (M12.2), Palindromic rheumatism (M12.3), intermittent hydrarthrosis (M12.4), traumatic arthropathy (M12.5) and other specific arthropathies, not elsewhere classified (M12.8).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 553 (Bone Diseases and Arthropathies with MCC, relative weight 1.2494) and DRG 554 (Bone Diseases and Arthropathies without MCC, relative weight 0.8331), in MDC 08 (Diseases and Disorders of the Musculoskeletal System and Connective Tissue), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
More specific arthropathy codes (official index)
- Charcot's
- diabetic
- syringomyelic G95.0 — Syringomyelia and syringobulbia
- cricoarytenoid J38.7 — Other diseases of larynx
- crystal (-induced)
- diabetic NEC
- distal interphalangeal, psoriatic L40.51 — Distal interphalangeal psoriatic arthropathy
- enteropathic M07.60 — Enteropathic arthropathies, unspecified site
- ankle M07.67 — Enteropathic arthropathies, ankle and foot
- elbow M07.62 — Enteropathic arthropathies, elbow
- foot joint M07.67 — Enteropathic arthropathies, ankle and foot
- hand joint M07.64 — Enteropathic arthropathies, hand
- hip M07.65 — Enteropathic arthropathies, hip
- knee M07.66 — Enteropathic arthropathies, knee
- multiple site M07.69 — Enteropathic arthropathies, multiple sites
- shoulder M07.61 — Enteropathic arthropathies, shoulder
- vertebra M07.68 — Enteropathic arthropathies, vertebrae
- wrist M07.63 — Enteropathic arthropathies, wrist
- facet joint M47.819 — Spondylosis without myelopathy or radiculopathy, site unspecified
- following intestinal bypass M02.00 — Arthropathy following intestinal bypass, unspecified site
- ankle M02.07 — Arthropathy following intestinal bypass, ankle and foot
- elbow M02.02 — Arthropathy following intestinal bypass, elbow
- foot joint M02.07 — Arthropathy following intestinal bypass, ankle and foot
- hand joint M02.04 — Arthropathy following intestinal bypass, hand
- hip M02.05 — Arthropathy following intestinal bypass, hip
- knee M02.06 — Arthropathy following intestinal bypass, knee
- multiple site M02.09 — Arthropathy following intestinal bypass, multiple sites
- shoulder M02.01 — Arthropathy following intestinal bypass, shoulder
- vertebra M02.08 — Arthropathy following intestinal bypass, vertebrae
- wrist M02.03 — Arthropathy following intestinal bypass, wrist
- gouty
- in (due to)
- Lesch-Nyhan syndrome E79.1 — Lesch-Nyhan syndrome
- sickle-cell disorders D57 — Sickle-cell disorders
- hemophilic NEC D66 — Hereditary factor VIII deficiency
- in (due to)
- hyperparathyroidism NEC E21.3 — Hyperparathyroidism, unspecified
- metabolic disease NOS E88.9 — Metabolic disorder, unspecified
- in (due to)
- acromegaly E22.0 — Acromegaly and pituitary gigantism
- amyloidosis E85.4 — Organ-limited amyloidosis
- blood disorder NOS D75.9 — Disease of blood and blood-forming organs, unspecified
- diabetes
- endocrine disease NOS E34.9 — Endocrine disorder, unspecified
- erythema
- multiforme L51.9 — Erythema multiforme, unspecified
- nodosum L52 — Erythema nodosum
- hemochromatosis E83.118 — Other hemochromatosis
- hemoglobinopathy NEC D58.2 — Other hemoglobinopathies
- hemophilia NEC D66 — Hereditary factor VIII deficiency
- Henoch-Schönlein purpura D69.0 — Allergic purpura
- hyperthyroidism E05.90 — Thyrotoxicosis, unspecified without thyrotoxic crisis or storm
- hypothyroidism E03.9 — Hypothyroidism, unspecified
- infective endocarditis I33.0 — Acute and subacute infective endocarditis
- leukemia NEC C95.9 — Leukemia, unspecified
- malignant histiocytosis C96.A — Histiocytic sarcoma
- metabolic disease NOS E88.9 — Metabolic disorder, unspecified
- multiple myeloma C90.0 — Multiple myeloma
- neoplastic disease NOS (see also Neoplasm) D49.9 — Neoplasm of unspecified behavior of unspecified site
- nutritional deficiency E63.9 — Nutritional deficiency, unspecified
- psoriasis NOS L40.50 — Arthropathic psoriasis, unspecified
- sarcoidosis D86.86 — Sarcoid arthropathy
- syphilis (late) A52.77 — Syphilis of bone and joint
- congenital A50.55 — Late congenital syphilitic arthropathy
- thyrotoxicosis E05.90 — Thyrotoxicosis, unspecified without thyrotoxic crisis or storm
- ulcerative colitis NEC K51.90 — Ulcerative colitis, unspecified, without complications
- viral hepatitis (postinfectious) NEC B19.9 — Unspecified viral hepatitis without hepatic coma
- Whipple's disease K90.81 — Whipple's disease
- Jaccoud
- juvenile
- psoriatic L40.54 — Psoriatic juvenile arthropathy
- mutilans (psoriatic) L40.52 — Psoriatic arthritis mutilans
- neuropathic (Charcot) M14.60 — Charcot's joint, unspecified site
- ankle M14.67 — Charcot's joint, ankle and foot
- diabetic
- elbow M14.62 — Charcot's joint, elbow
- foot joint M14.67 — Charcot's joint, ankle and foot
- hand joint M14.64 — Charcot's joint, hand
- hip M14.65 — Charcot's joint, hip
- knee M14.66 — Charcot's joint, knee
- multiple site M14.69 — Charcot's joint, multiple sites
- nonsyphilitic NEC G98.0 — Neurogenic arthritis, not elsewhere classified
- shoulder M14.61 — Charcot's joint, shoulder
- syringomyelic G95.0 — Syringomyelia and syringobulbia
- vertebra M14.68 — Charcot's joint, vertebrae
- wrist M14.63 — Charcot's joint, wrist
- osteopulmonary
- postdysenteric M02.10 — Postdysenteric arthropathy, unspecified site
- ankle M02.17 — Postdysenteric arthropathy, ankle and foot
- elbow M02.12 — Postdysenteric arthropathy, elbow
- foot joint M02.17 — Postdysenteric arthropathy, ankle and foot
- hand joint M02.14 — Postdysenteric arthropathy, hand
- hip M02.15 — Postdysenteric arthropathy, hip
- knee M02.16 — Postdysenteric arthropathy, knee
- multiple site M02.19 — Postdysenteric arthropathy, multiple sites
- shoulder M02.11 — Postdysenteric arthropathy, shoulder
- vertebra M02.18 — Postdysenteric arthropathy, vertebrae
- wrist M02.13 — Postdysenteric arthropathy, wrist
- postimmunization M02.20 — Postimmunization arthropathy, unspecified site
- ankle M02.27 — Postimmunization arthropathy, ankle and foot
- elbow M02.22 — Postimmunization arthropathy, elbow
- foot joint M02.27 — Postimmunization arthropathy, ankle and foot
- hand joint M02.24 — Postimmunization arthropathy, hand
- hip M02.25 — Postimmunization arthropathy, hip
- knee M02.26 — Postimmunization arthropathy, knee
- multiple site M02.29 — Postimmunization arthropathy, multiple sites
- shoulder M02.21 — Postimmunization arthropathy, shoulder
- vertebra M02.28 — Postimmunization arthropathy, vertebrae
- wrist M02.23 — Postimmunization arthropathy, wrist
- postinfectious NEC B99 — Other and unspecified infectious diseases
- in (due to)
- enteritis due to Yersinia enterocolitica A04.6 — Enteritis due to Yersinia enterocolitica
- syphilis A52.77 — Syphilis of bone and joint
- viral hepatitis NEC B19.9 — Unspecified viral hepatitis without hepatic coma
- postrheumatic, chronic (Jaccoud) M12.00 — Chronic postrheumatic arthropathy [Jaccoud], unspecified site
- ankle M12.07 — Chronic postrheumatic arthropathy [Jaccoud], ankle and foot
- elbow M12.02 — Chronic postrheumatic arthropathy [Jaccoud], elbow
- foot joint M12.07 — Chronic postrheumatic arthropathy [Jaccoud], ankle and foot
- hand joint M12.04 — Chronic postrheumatic arthropathy [Jaccoud], hand
- hip M12.05 — Chronic postrheumatic arthropathy [Jaccoud], hip
- knee M12.06 — Chronic postrheumatic arthropathy [Jaccoud], knee
- multiple site M12.09 — Chronic postrheumatic arthropathy [Jaccoud], multiple sites
- shoulder M12.01 — Chronic postrheumatic arthropathy [Jaccoud], shoulder
- specified joint NEC M12.08 — Chronic postrheumatic arthropathy [Jaccoud], other specified site
- vertebrae M12.08 — Chronic postrheumatic arthropathy [Jaccoud], other specified site
- wrist M12.03 — Chronic postrheumatic arthropathy [Jaccoud], wrist
- psoriatic NEC L40.59 — Other psoriatic arthropathy
- interphalangeal, distal L40.51 — Distal interphalangeal psoriatic arthropathy
- reactive M02.9 — Reactive arthropathy, unspecified
- in (due to)
- infective endocarditis I33.0 — Acute and subacute infective endocarditis
- specified type NEC M02.80 — Other reactive arthropathies, unspecified site
- ankle M02.87 — Other reactive arthropathies, ankle and foot
- elbow M02.82 — Other reactive arthropathies, elbow
- foot joint M02.87 — Other reactive arthropathies, ankle and foot
- hand joint M02.84 — Other reactive arthropathies, hand
- hip M02.85 — Other reactive arthropathies, hip
- knee M02.86 — Other reactive arthropathies, knee
- multiple site M02.89 — Other reactive arthropathies, multiple sites
- shoulder M02.81 — Other reactive arthropathies, shoulder
- vertebra M02.88 — Other reactive arthropathies, vertebrae
- wrist M02.83 — Other reactive arthropathies, wrist
- specified form NEC M12.80 — Other specific arthropathies, not elsewhere classified, unspecified site
- ankle M12.87 — Other specific arthropathies, not elsewhere classified, ankle and foot
- elbow M12.82 — Other specific arthropathies, not elsewhere classified, elbow
- foot joint M12.87 — Other specific arthropathies, not elsewhere classified, ankle and foot
- hand joint M12.84 — Other specific arthropathies, not elsewhere classified, hand
- hip M12.85 — Other specific arthropathies, not elsewhere classified, hip
- knee M12.86 — Other specific arthropathies, not elsewhere classified, knee
- multiple site M12.89 — Other specific arthropathies, not elsewhere classified, multiple sites
- shoulder M12.81 — Other specific arthropathies, not elsewhere classified, shoulder
- specified joint NEC M12.88 — Other specific arthropathies, not elsewhere classified, other specified site
- vertebrae M12.88 — Other specific arthropathies, not elsewhere classified, other specified site
- wrist M12.83 — Other specific arthropathies, not elsewhere classified, wrist
- syringomyelic G95.0 — Syringomyelia and syringobulbia
- tabes dorsalis A52.16 — Charcot's arthropathy (tabetic)
- tabetic A52.16 — Charcot's arthropathy (tabetic)
- temporomandibular joint M26.65 — Arthropathy of temporomandibular joint
- transient
- traumatic M12.50 — Traumatic arthropathy, unspecified site
- ankle M12.57 — Traumatic arthropathy, ankle and foot
- elbow M12.52 — Traumatic arthropathy, elbow
- foot joint M12.57 — Traumatic arthropathy, ankle and foot
- hand joint M12.54 — Traumatic arthropathy, hand
- hip M12.55 — Traumatic arthropathy, hip
- knee M12.56 — Traumatic arthropathy, knee
- multiple site M12.59 — Traumatic arthropathy, multiple sites
- shoulder M12.51 — Traumatic arthropathy, shoulder
- specified joint NEC M12.58 — Traumatic arthropathy, other specified site
- vertebrae M12.58 — Traumatic arthropathy, other specified site
- wrist M12.53 — Traumatic arthropathy, wrist
Common questions about arthropathy ICD-10 codes
What is the ICD-10 code for arthropathy?
- M12.9 — Arthropathy, unspecified. More specific codes apply when the documentation supports them: G95.0, J38.7, L40.51, M07.60 and others below.
What is the ICD-10 code for cricoarytenoid arthropathy?
- J38.7 — Other diseases of larynx.
What is the ICD-10 code for enteropathic arthropathy?
- M07.60 — Enteropathic arthropathies, unspecified site.
What is the ICD-10 code for facet joint arthropathy?
- M47.819 — Spondylosis without myelopathy or radiculopathy, site unspecified.
What is the ICD-10 code for hemophilic nec arthropathy?
- D66 — Hereditary factor VIII deficiency.
What is the ICD-10 code for mutilans arthropathy?
- L40.52 — Psoriatic arthritis mutilans.
What is the ICD-10 code for neuropathic arthropathy?
- M14.60 — Charcot's joint, unspecified site.
Is M12.9 billable?
- Yes. M12.9 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can M12.9 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict M12.9 as a principal diagnosis.
Is M12.9 a CC or MCC?
- No. M12.9 is neither a CC nor an MCC under MS-DRG v44.0.