8C81 Autoimmune myopathy International Classification of Diseases for Mortality and Morbidity Statistics, 11th Revision, v2024-01 Autoimmune myopathy is a subgroup of idiopathic inflammatory myopathies, which, despite diverse causes, have the common histopathological features of myocyte necrosis without significant inflammation. Patients present with a subacute severe symmetrical proximal myopathy, associated with a markedly elevated creatine kinase level. These are most likely immune-mediated, as they respond to immunotherapy. It is often accompanied by statin therapy, connective tissue diseases, cancer, and autoantibodies specific for signal recognition particle (SRP) or 3-hydroxy-3-methylglutaryl–coenzyme A reductase (HMGCR).
exclusions postcoordination Add Stem and/or Extension codes to form a cluster code which adds detail to the condition.
Laterality - only one may be selected [select] XK9J Bilateral XK8G Left XK9K Right XK70 Unilateral, unspecified Specific anatomy - multiple selections are allowed [select] XA2JQ8 Muscles of the head and neck – XA2SJ6 Alaeque nasi muscle – XA2QF2 Anterior auricularis muscle – XA3SS4 Aryepiglotticus muscle – XA8GG0 Buccinator muscle – XA0UH6 Constrictor of pharynx - inferior muscle – XA3S80 Constrictor of pharynx - middle muscle – XA9568 Constrictor of pharynx - superior muscle – XA01U4 Corrugator supercilii muscle – XA7W64 Cricothyroid muscle – XA04G0 Depressor anguli oris muscle – XA60C8 Depressor labii inferioris muscle – XA2967 Digastric muscle – XA09D1 Frontalis muscle – XA50R5 Genioglossus muscle – XA5YU7 Geniohyoid muscle – XA5DX5 Hyoglossus muscle – XA3PY5 Hyoid muscle – XA4N79 Inferior oblique muscle – XA1X67 Inferior rectus muscle – XA31C3 Intrinsic muscles of tongue – XA5WQ9 Lateral cricoarytenoid muscle – XA8ZB7 Lateral pterygoid muscle – XA3282 Lateral rectus muscle – XA75X0 Levator anguli oris muscle – XA1490 Levator labii superioris muscle – XA2R46 Levator palpebrae superioris muscle – XA5LP4 Levator veli palatini muscle – XA6YE6 Longus capitis muscle – XA8EM8 Longus colli muscle – XA2VD8 Masseter muscle – XA2DX4 Medial pterygoid muscle – XA95N1 Medial rectus muscle – XA0U25 Mentalis muscle – XA8AR7 Musculus uvulae muscle – XA83A9 Mylohyoid muscle – XA0Y41 Nasalis muscle – XA59J0 Oblique arytenoid muscle – XA8L72 Oblique auricularis muscle – XA6LS5 Obliquus capitis inferior muscle – XA0X13 Obliquus capitis superior muscle – XA4RN7 Omohyoid muscle – XA0ZM1 Orbicularis oculi muscle – XA55R2 Orbicularis oris muscle – XA2U72 Palatoglossus muscle – XA1PG4 Palatopharyngeus muscle – XA17T6 Platysma muscle – XA8C48 Posterior auricularis muscle – XA9RS8 Posterior cricoarytenoid muscle – XA6648 Procerus muscle – XA16A4 Rectus capitis anterior muscle – XA0JK2 Rectus capitis lateralis muscle – XA20Q8 Rectus capitis posterior major muscle – XA80F2 Rectus capitis posterior minor muscle – XA49A7 Risorius muscle – XA81P5 Salpingopharyngeus muscle – XA0JF1 Scalenus anterior muscle – XA6S71 Scalenus medius muscle – XA3TF5 Scalenus minimus muscle – XA35K5 Scalenus posterior muscle – XA58T9 Splenius capitis muscle – XA6095 Splenius cervicis muscle – XA8D61 Stapedius muscle – XA2H61 Sternocleidomastoid muscle – XA5QR5 Sternohyoid muscle – XA9H91 Sternothyroid muscle – XA5L15 Styloglossus muscle – XA1TY3 Stylohyoid muscle – XA9AM5 Stylopharyngeus muscle – XA8SW4 Superior auricularis muscle – XA2X27 Superior oblique muscle – XA51R1 Superior rectus muscle – XA01H9 Temporalis muscle – XA1CQ1 Temporoparietalis muscle – XA42R7 Tensor tympani muscle – XA7LF2 Tensor veli palatini muscle – XA8352 Thyroarytenoid muscle – XA2ZL4 Thyroepiglotticus muscle – XA87S0 Thyrohyoid muscle – XA3856 Transverse arytenoid muscle – XA9AU8 Transverse auricularis muscle – XA0M12 Vocalis muscle – XA37U4 Zygomaticus major muscle – XA2AP2 Zygomaticus minor muscle XA19W0 Muscle of the thorax – XA2JL0 Diaphragm – XA6RW0 External intercostal muscle – XA3P12 Innermost intercostal muscle – XA1256 Internal intercostal muscle – XA7NL0 Levator costarum muscle – XA1QH6 Pectoralis major muscle – XA0SB2 Pectoralis minor muscle – XA7QL8 Serratus anterior muscle – XA44Y8 Subcostalis muscle – XA3G64 Transversus thoracis muscle XA8PG5 Muscle of the abdomen – XA3TW8 External oblique abdominis muscle – XA9B36 Internal oblique abdominis muscle – XA43E9 Psoas major muscle – XA7DA1 Psoas minor muscle – XA6AY9 Pyramidalis muscle – XA1GP3 Quadratus lumborum muscle – XA1N65 Rectus abdominis muscle – XA9FR3 Transversus abdominis muscle XA8Z76 Muscle of the back – XA19S9 Iliocostalis muscle – XA8YU1 Interspinales muscle – XA02Z7 Intertransversarii muscle – XA9AG9 Latissimus dorsi muscle – XA00C1 Levator scapulae muscle – XA6MB7 Longissimus muscle – XA8512 Multifidus muscle – XA25S1 Rhomboid major muscle – XA5GH5 Rhomboid minor muscle – XA76Q0 Rotatores muscle – XA60Q0 Semispinalis muscle – XA4A47 Serratus posterior inferior muscle – XA15B6 Serratus posterior superior muscle – XA0U57 Spinalis muscle – XA7RM2 Teres major muscle – XA86Q8 Trapezius muscle – XA3YC6 Iliococcygeus muscle – XA73H8 Ischiocavernosus muscle – XA9T66 Levator ani-coccygeus muscle – XA3HP4 Pubococcygeus muscle – XA7MM8 Puborectalis muscle – XA4RK4 Pubovaginalis muscle – XA3ML6 Sphincter ani muscle – XA8FT0 Sphincter urethrae muscle – XA56U7 Superficial transverse perinei muscle XA2J71 Muscles of the pelvis and perineum – XA2E07 Bulbospongiosus muscle – XA5FZ1 Cremaster muscle – XA8HG2 Dartos muscle – XA2LG6 Deep transverse perinei muscle XA4Z20 Muscles of the upper extremity – XA90T3 Abductor digiti minimi muscle (hand) – XA0Z05 Abductor pollicis brevis muscle – XA7PS1 Abductor pollicis longus muscle – XA54Z7 Adductor pollicis muscle – XA2583 Anconeus muscle – XA0GV5 Articularis cubiti muscle – XA1KL5 Biceps brachii muscle –– XA0481 Long head of the biceps brachii muscle –– XA3J17 Short head of the biceps brachii muscle – XA6CR7 Brachialis muscle – XA2ZN1 Brachioradialis muscle – XA0TQ5 Coracobrachialis muscle – XA3VN0 Deltoid muscle – XA4U40 Extensor carpi radialis brevis – XA8824 Extensor carpi radialis longus muscle – XA9304 Extensor carpi ulnaris muscle – XA0T60 Extensor digiti minimi muscle (hand) – XA7QU8 Extensor digitorum muscle (hand) – XA1AV6 Extensor indicis muscle – XA4V20 Extensor pollicis brevis muscle – XA0CS4 Extensor pollicis longus muscle – XA0S07 Flexor carpi radialis muscle – XA4HV9 Flexor carpi ulnaris muscle – XA3UK3 Flexor digiti minimi brevis muscle (hand) – XA4Z43 Flexor digitorum profundus muscle – XA1NW3 Flexor digitorum superficialis muscle – XA5QD0 Flexor pollicis brevis muscle – XA3GQ7 Flexor pollicis longus muscle – XA6463 Interossei of the hand muscle –– XA2QW3 Dorsal interossei of the hand muscle –– XA5055 Palmar interossei of the hand muscle – XA9B77 Lumbricals of hand muscle – XA4RW9 Opponens digiti minimi muscle (hand) – XA0Q73 Opponens pollicis muscle – XA9KL5 Palmaris brevis muscle – XA6P76 Palmaris longus muscle – XA91W0 Pronator quadratus muscle – XA58Z6 Pronator teres muscle – XA3DL4 Rotator cuff muscle –– XA7E49 Infraspinatus muscle –– XA1QF1 Subscapularis muscle –– XA74P3 Supraspinatus muscle –– XA3CP1 Teres minor muscle – XA90Z6 Supinator muscle – XA2EB2 Triceps brachii muscle XA47J0 Muscles of the lower extremity – XA0W07 Abductor digiti minimi muscle (foot) – XA7119 Abductor hallucis muscle – XA8GU7 Adductor brevis muscle – XA0FW7 Adductor hallucis muscle – XA01U3 Adductor longus muscle – XA8HR3 Adductor magnus muscle – XA0DE1 Articularis genu muscle – XA3CB9 Biceps femoris muscle – XA7FZ1 Extensor digitorum brevis muscle (foot) – XA24U7 Extensor digitorum longus muscle (foot) – XA3T27 Extensor hallucis brevis muscle – XA7R67 Extensor hallucis longus muscle – XA20W3 Flexor digiti minimi brevis muscle (foot) – XA97C3 Flexor digitorum brevis muscle – XA23Q3 Flexor digitorum longus muscle (foot) – XA3MB7 Flexor hallucis brevis muscle – XA7E33 Flexor hallucis longus muscle – XA1PK6 Gastrocnemius muscle – XA7PN8 Gemellus inferior muscle – XA0472 Gemellus superior muscle – XA1HH2 Gracilis muscle – XA0200 Iliacus muscle – XA15P6 Interossei - dorsal of foot muscle – XA8TS8 Interossei - plantar of foot muscle – XA7PN0 Lumbricals of foot muscle – XA7Y24 Obturator externus muscle – XA11E8 Obturator internus muscle – XA9E00 Pectineus muscle – XA26M7 Peroneus brevis muscle – XA3P60 Peroneus longus muscle – XA9D52 Peroneus tertius muscle – XA7XS8 Piriformis muscle – XA7W96 Plantaris muscle – XA8CL8 Popliteus muscle – XA41G3 Quadratus plantae muscle – XA1BT5 Quadriceps femoris muscle – XA5447 Rectus femoris muscle – XA5CE3 Sartorius muscle – XA5AM5 Semimembranosus muscle – XA2EK1 Semitendinosus muscle – XA5B83 Soleus muscle – XA02U9 Tibialis anterior muscle – XA3VR3 Tibialis posterior muscle – XA33F6 Vastus intermedius muscle – XA00Z6 Vastus lateralis muscle – XA9RD2 Vastus medialis muscle – XA48F2 Gluteus maximus muscle – XA5VJ8 Gluteus medius muscle – XA7BY4 Gluteus minimus muscle – XA11U3 Tensor fasciae lata muscle Has causing condition - a selection is required - multiple selections are allowed [select] 4A40.0 Systemic lupus erythematosus – 4A40.00 Systemic lupus erythematosus with skin involvement – 4A40.0Y Other specified systemic lupus erythematosus – 4A40.0Z Systemic lupus erythematosus, 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 4A43.2 Sjögren syndrome – 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 FA20 Rheumatoid arthritis – FA20.0 Seropositive rheumatoid arthritis – FA20.1 Seronegative rheumatoid arthritis – FA20.Z Rheumatoid arthritis, serology unspecified
synonyms
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