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BC42 Myocarditis International Classification of Diseases for Mortality and Morbidity Statistics, 11th Revision, v2024-01 Myocarditis (inflammatory cardiomyopathy) is inflammation of the heart muscle generally in the presence of a dilated cardiomyopathy that results from exposure to either discrete infectious external antigens such as viruses, bacteria, fungal or parasites; non-infectious external antigens such as hypersensitivity to drugs; or internal non-infectious triggers such as autoimmune or hypersensitive activation against self-antigens.
code elsewhere sections/codes in this section (BC42-BC42) postcoordination Add Stem and/or Extension codes to form a cluster code which adds detail to the condition.
Has manifestation - multiple selections are allowed [select] BD10 Congestive heart failure BD11 Left ventricular failure – BD11.0 Left ventricular failure with preserved ejection fraction – BD11.1 Left ventricular failure with mid range ejection fraction – BD11.2 Left ventricular failure with reduced ejection fraction – BD11.Z Left ventricular failure, unspecified BD12 High output syndromes BD13 Right ventricular failure BD14 Biventricular failure BD1Y Other specified heart failure BD1Z Heart failure, unspecified Course - only one may be selected [select] XT5R Acute XT8W Chronic Has causing condition - a selection is required - multiple selections are allowed [select] 4A40 Lupus erythematosus – 4A40.0 Systemic lupus erythematosus – 4A40.1 Drug-induced lupus erythematosus – 4A40.Y Other specified lupus erythematosus – 4A40.Z Lupus erythematosus, unspecified –– 4A40.00 Systemic lupus erythematosus with skin involvement –– 4A40.0Y Other specified systemic lupus erythematosus –– 4A40.0Z Systemic lupus erythematosus, unspecified 4A41 Idiopathic inflammatory myopathy – 4A41.0 Dermatomyositis – 4A41.1 Polymyositis – 4A41.2 Inclusion body myopathy – 4A41.Y Other specified idiopathic inflammatory myopathy – 4A41.Z Idiopathic inflammatory myopathy, unspecified –– 4A41.00 Adult dermatomyositis –– 4A41.01 Juvenile dermatomyositis –– 4A41.0Z Dermatomyositis, unspecified –– 4A41.10 Juvenile polymyositis –– 4A41.11 Paraneoplastic polymyositis –– 4A41.1Y Other specified polymyositis –– 4A41.1Z Polymyositis, unspecified –– 4A41.20 Inflammatory inclusion body myositis –– 4A41.21 Noninflammatory inclusion body myopathy –– 4A41.2Z Inclusion body myopathy, unspecified 4A42 Systemic sclerosis – 4A42.0 Paediatric onset systemic sclerosis – 4A42.1 Diffuse systemic sclerosis – 4A42.2 Limited systemic sclerosis – 4A42.Z Systemic sclerosis, unspecified 4A43 Overlap or undifferentiated nonorgan specific systemic autoimmune disease – 4A43.0 IgG4 related disease – 4A43.1 Mikulicz disease – 4A43.2 Sjögren syndrome – 4A43.3 Mixed connective tissue disease – 4A43.4 Diffuse eosinophilic fasciitis – 4A43.Y Other specified overlap non-organ specific systemic autoimmune disease – 4A43.Z Undifferentiated non-organ specific systemic autoimmune disease –– 4A43.20 Primary Sjögren syndrome –– 4A43.21 Secondary Sjögren syndrome –– 4A43.22 Paediatric onset Sjögren syndrome –– 4A43.2Y Other specified sjögren syndrome –– 4A43.2Z Sjögren syndrome, unspecified 4A44 Vasculitis – 4A44.0 Rhizomelic pseudopolyarthritis – 4A44.1 Aortic arch syndrome – 4A44.2 Giant cell arteritis – 4A44.3 Single organ vasculitis – 4A44.4 Polyarteritis nodosa – 4A44.5 Mucocutaneous lymph node syndrome – 4A44.6 Sneddon syndrome – 4A44.7 Primary angiitis of the central nervous system – 4A44.8 Thromboangiitis obliterans – 4A44.9 Immune complex small vessel vasculitis – 4A44.A Antineutrophil cytoplasmic antibody-associated vasculitis – 4A44.B Leukocytoclastic vasculitis – 4A44.Y Other specified vasculitis – 4A44.Z Vasculitis, unspecified –– 4A44.90 Cryoglobulinaemic vasculitis –– 4A44.91 Hypocomplementaemic urticarial vasculitis –– 4A44.92 IgA vasculitis –– 4A44.9Y Other specified immune complex small vessel vasculitis –– 4A44.9Z Immune complex small vessel vasculitis, unspecified –– 4A44.A0 Microscopic polyangiitis –– 4A44.A1 Granulomatosis with polyangiitis –– 4A44.A2 Eosinophilic granulomatosis with polyangiitis –– 4A44.AY Other specified antineutrophil cytoplasmic antibody-associated vasculitis –– 4A44.AZ Antineutrophil cytoplasmic antibody-associated vasculitis, unspecified –– 4A44.B0 Cutaneous leukocytoclastic vasculitis –– 4A44.BY Other specified leukocytoclastic vasculitis –– 4A44.BZ Leukocytoclastic vasculitis, unspecified 4A45 Antiphospholipid syndrome – 4A45.0 Primary antiphospholipid syndrome – 4A45.1 Secondary antiphospholipid syndrome – 4A45.2 Antiphospholipid syndrome in pregnancy – 4A45.3 Lupus anticoagulant-hypoprothrombinaemia syndrome – 4A45.Z Antiphospholipid syndrome, unspecified 4A4Y Other specified nonorgan specific systemic autoimmune disorders 4A4Z Nonorgan specific systemic autoimmune disorders, unspecified –– LD24.K0 Osteogenesis imperfecta
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