list of icd-9 codes 520–579: diseases of the digestive system list of icd-9 codes 520–579: diseases of the digestive system this is a shortened version of the ninth chapter of the icd-9: diseases of the digestive system. it covers icd codes 520 to 579. the full chapter can be found on pages 301 to 328 of volume 1, which contains all (sub)categories of the icd-9. volume 2 is an alphabetical index of volume 1. both volumes can be downloaded for free from the website of the world health organization. icd-9 chapters chapter block title i 001–139 infectious and parasitic diseases ii 140–239 neoplasms iii 240–279 endocrine, nutritional and metabolic diseases, and immunity disorders iv 280–289 diseases of the blood and blood-forming organs v 290–319 mental disorders vi 320–389 diseases of the nervous system and sense organs vii 390–459 diseases of the circulatory system viii 460–519 diseases of the respiratory system ix 520–579 diseases of the digestive system x 580–629 diseases of the genitourinary system xi 630–679 complications of pregnancy, childbirth, and the puerperium xii 680–709 diseases of the skin and subcutaneous tissue xiii 710–739 diseases of the musculoskeletal system and connective tissue xiv 740–759 congenital anomalies xv 760–779 certain conditions originating in the perinatal period xvi 780–799 symptoms, signs and ill-defined conditions xvii 800–999 injury and poisoning e800–e999 supplementary classification of external causes of injury and poisoning v01–v82 supplementary classification of factors influencing health status and contact with health services m8000–m9970 morphology of neoplasms diseases of oral cavity, salivary glands, and jaws (520–529) 520 disorders of tooth development and eruption 520.0 anodontia 520.1 supernumerary teeth 520.2 abnormalities of size and form of teeth 520.3 mottled teeth 520.4 disturbances of tooth formation 520.5 hereditary disturbances in tooth structure not elsewhere classified 520.6 disturbances in tooth eruption 520.7 teething syndrome 521 diseases of hard tissues of teeth 521.0 dental caries 521.1 excessive attrition 521.2 abrasion of teeth 521.3 erosion of teeth 521.4 pathological tooth resorption 521.5 hypercementosis 521.6 ankylosis of teeth 521.7 intrinsic posteruptive color changes of teeth 521.8 other specified diseases of hard tissues of teeth 521.81 cracked tooth 522 diseases of pulp and periapical tissues 523 gingival and periodontal diseases 523.1 gingivitis, chronic 524 dentofacial anomalies, including malocclusion 524.0 major anomalies of jaw size 524.03 major anomalies of jaw size maxillary hypoplasia 524.1 anomalies of relationship of jaw to cranial base 524.2 anomalies of dental arch relationship 524.3 anomalies of tooth position of fully erupted teeth 524.4 malocclusion unspecified 524.5 dentofacial functional abnormalities 524.6 temporomandibular joint disorders 524.7 dental alveolar anomalies 524.8 other specified dentofacial anomalies 525 other diseases and conditions of the teeth and supporting structures 526 diseases of the jaws 526.0 developmental odontogenic cysts 526.1 fissural cysts of jaw 526.2 other cysts of jaws 526.3 central giant cell (reparative) granuloma 526.4 inflammatory conditions of jaw 526.5 alveolitis of jaw 526.6 periradicular pathology associated with previous endodontic treatment 526.8 other specified diseases of the jaws 526.81 exostosis of jaw 527 diseases of the salivary glands 527.0 atrophy of salivary gland 527.1 hypertrophy of salivary gland 527.2 sialoadenitis 527.3 abscess of salivary gland 527.4 fistula of salivary gland 527.5 sialolithiasis 527.6 mucocele of salivary gland 527.7 disturbance of salivary secretion 528 diseases of the oral soft tissues, excluding lesions specific for gingiva and tongue 528.0 stomatitis 528.1 cancrum oris 528.2 aphthous ulcer, oral aphthae 528.3 cellulitis and abscess of oral soft tissues 528.4 cysts of oral soft tissues 528.5 diseases of lips 528.6 leukoplakia of oral mucosa including tongue 528.6 leukoplakia, oral mucosa 528.7 other disturbances of oral epithelium including tongue 528.79 erythroplakia 528.8 oral submucosal fibrosis, including of tongue 528.9 other and unspecified diseases of the oral soft tissues 529 diseases and other conditions of the tongue 529.0 glossitis diseases of esophagus, stomach, and duodenum (530–539) 530 diseases of esophagus 530.0 achalasia/cardiospasm 530.1 esophagitis, unspec. 530.3 esophageal stricture/stenosis 530.8 other specified disorders of esophagus 530.81 gastroesophageal reflux, no esophagitis 530.85 barrett's esophagitis 531 gastric ulcer 532 duodenal ulcer 533 peptic ulcer, site unspecified 534 gastrojejunal ulcer 535 gastritis and duodenitis 535.0 acute gastritis 535.6 duodenitis 536 disorders of function of stomach 536.3 gastroparesis 536.8 dyspepsia 537 other disorders of stomach and duodenum 538 gastrointestinal mucositis (ulcerative) 539 complications of bariatric procedures appendicitis (540–543) 540 acute appendicitis 540.0 appendicitis, acute w/ gen. peritonitis 540.9 appendicitis, acute w/o peritonitis 541 appendicitis, unqualified 542 other appendicitis 543 other diseases of appendix hernia of abdominal cavity (550–553) 550 inguinal hernia 550.9 hernia, inguinal, nos, unilateral 551 other hernia of abdominal cavity, with gangrene 552 other hernia of abdominal cavity with obstruction, without mention 553 other hernia of abdominal cavity without mention of obstruction 553.0 hernia, femoral, unilateral 553.1 hernia, umbilical 553.2 hernia, ventral, unspec. 553.21 hernia, ventral, incisional 553.3 hernia, hiatal, noncongenital 553.9 hernias, other, nos noninfectious enteritis and colitis (555–558) 555 regional enteritis 555.0 crohn's, small intestine 555.1 crohn's, large intestine 555.9 crohn's disease, nos 556 idiopathic proctocolitis 556.9 ulcerative colitis, unspec. 557 vascular insufficiency of intestine 557.0 vascular insufficiency, acute, intestine 557.9 ischemic bowel disease, unspec. 558 other noninfectious gastroenteritis and colitis 558.9 gastroenteritis, noninfectious, unspec. other diseases of intestines and peritoneum (560–569) 560, intestinal obstruction without mention of hernia 560.1, ileus 560.3, impaction of intestine 560.9, intestinal obstruction unspec 562, diverticula of intestine 562.1, diverticulosis of colon 562.11, diverticulitis of colon, nos 562.12, diverticulosis colon w/ hemorrhage 564, functional digestive disorders not elsewhere classified 564.0, constipation unspec 564.1, irritable bowel syndrome 564.2, post-gastric-surgery syndromes 564.4, postoperative functional disorders 564.6, anal spasm 565, anal fissure and fistula 565.0, anal fissure nontraumatic 566, abscess of anal and rectal regions 566.0, abscess perianal 567, peritonitis 567.0, peritonitis in infectious diseases classified elsewhere 567.1, pneumococcal peritonitis 567.2, other suppurative peritonitis 567.21, peritonitis (acute) generalized 567.22, peritoneal abscess 567.23, spontaneous bacterial peritonitis 567.3, retroperitoneal infections 567.31, psoas muscle abscess 568, other disorders of peritoneum 568.0, peritoneal adhesions 568.8, other specified disorders of peritoneum pneumoperitoneum 569, other disorders of intestine 569.3, bleeding rectal 569.61, infection colostomy/enterostomy 569.62, mechanical complication of ostomy 569.85, angiodysplasia intestine w/ hemorrhage other diseases of digestive system (570–579) liver 570 acute and subacute necrosis of liver 570.0 hepatic failure, acute 571 chronic liver disease and cirrhosis 571.0 fatty liver, alcoholic 571.2 cirrhosis, liver, alcoholic 571.4 hepatitis, chronic, unspec. 571.5 cirrhosis, nos 571.6 primary biliary cirrhosis 571.9 liver disease, chronic, unspec. 572 liver abscess and sequelae of chronic liver disease 572.2 coma, hepatic 572.4 hepatorenal syndrome 573 other disorders of liver 573.3 hepatitis, toxic gallbladder 574 cholelithiasis 574.3 choledocholithiasis 575 other disorders of gallbladder 575.0 cholecystitis, acute 575.9 gallbladder disease, unspec. other biliary tract 576 other disorders of biliary tract 576.0 postcholecystectomy syndrome 576.1 cholangitis 576.2 obstruction of bile duct mirizzi's syndrome 576.3 perforation of bile duct 576.4 fistula of bile duct 576.5 spasm of sphincter of oddi other 577 diseases of pancreas 577.0 pancreatitis, acute 577.1 pancreatitis, chronic 577.2 pancreatic cyst, pseudocyst 578 gastrointestinal hemorrhage 578.0 hematemesis 578.1 blood in stool, melena 579 intestinal malabsorption 579.0 coeliac disease 579.1 tropical sprue 579.2 blind loop syndrome 579.3 other and unspecified postsurgical nonabsorption short bowel syndrome 579.4 pancreatic steatorrhea 579.8 other specified intestinal malabsorption protein losing enteropathy 579.9 unspecified intestinal malabsorption developmental tooth disease/tooth abnormalityquantity anodontia/hypodontia hyperdontia shape and size concrescence fusion gemination dens evaginatus/talon cusp dens invaginatus enamel pearl macrodontia microdontia taurodontism supernumerary roots formation dilaceration regional odontodysplasia turner's hypoplasia enamel hypoplasia ectopic enamel ectopic tooth other hereditary amelogenesis imperfecta dentinogenesis imperfecta dentin dysplasia regional odontodysplasia other dental fluorosis tooth impaction acquired tooth diseasehard tissues caries (tooth decay) attrition abrasion erosion hypercementosis tooth resorption (external resorption, internal resorption, root resorption) pulp/periapical (endodontal)pulpal external resorption internal resorption irreversible pulpitis reversible pulpitis pulp necrosis pink tooth of mummery periapical acute apical periodontitis chronic apical periodontitis combined periodontic-endodontic lesions fistula periapical abscess phoenix abscess vertical root fracture ungrouped pulpitis radicular cyst periapical abscess gingiva/periodontal(periodontal) gingivitis periodontitis (chronic periodontitis) periodontal disease bone cyst dentigerous cyst calcifying odontogenic cyst glandular odontogenic cyst other cracked tooth syndrome to be groupedfrom periodontologydiagnoses chronic periodontitis localized aggressive periodontitis generalized aggressive periodontitis periodontitis as a manifestation of systemic disease necrotizing periodontal diseases abscesses of the periodontium combined periodontic-endodontic lesions pathogenesis a. actinomycetemcomitans capnocytophaga sp. f. nucleatum p. gingivalis p. intermedia t. forsythia t. denticola pathologic entities calculus edentulism fremitus furcation defect gingival enlargement gingival pocket gingivitis horizontal bony defect linear gingival erythema occlusal trauma periodontal pocket periodontal disease periodontitis plaque recession vertical bony defect dental disease involving the jawgeneral jaw abnormality malocclusion orthodontics gnathitis size micrognathism maxillary hypoplasia maxilla and mandible cherubism congenital epulis torus mandibularis torus palatinus other jaw and base of cranium prognathism retrognathism dental arch crossbite overbite temporomandibular joint disorder oral and maxillofacial pathologylips cheilitis actinic angular plasma cell cleft lip congenital lip pit eclabium herpes labialis macrocheilia microcheilia nasolabial cyst sun poisoning trumpeter's wart tongue ankyloglossia black hairy tongue caviar tongue crenated tongue cunnilingus tongue fissured tongue foliate papillitis glossitis geographic tongue median rhomboid glossitis transient lingual papillitis glossoptosis hypoglossia lingual thyroid macroglossia microglossia rhabdomyoma palate bednar's aphthae cleft palate high-arched palate palatal cysts of the newborn inflammatory papillary hyperplasia stomatitis nicotina torus palatinus oral mucosa – lining of mouth amalgam tattoo angina bullosa haemorrhagica behçet's disease bohn's nodules burning mouth syndrome candidiasis condyloma acuminatum darier's disease epulis fissuratum erythema multiforme erythroplakia fibroma giant-cell focal epithelial hyperplasia fordyce spots hairy leukoplakia hand, foot and mouth disease hereditary benign intraepithelial dyskeratosis herpangina herpes zoster intraoral dental sinus leukoedema leukoplakia lichen planus linea alba lupus erythematosus melanocytic nevus melanocytic oral lesion molluscum contagiosum morsicatio buccarum oral cancer benign: squamous cell papilloma keratoacanthoma malignant: adenosquamous carcinoma basaloid squamous carcinoma mucosal melanoma spindle cell carcinoma squamous cell carcinoma verrucous carcinoma oral florid papillomatosis oral melanosis smoker's melanosis pemphigoid benign mucous membrane pemphigus plasmoacanthoma stomatitis aphthous denture-related herpetic smokeless tobacco keratosis submucous fibrosis ulceration riga–fede disease verruca vulgaris verruciform xanthoma white sponge nevus teeth (pulp, dentin, enamel) amelogenesis imperfecta ankylosis anodontia caries early childhood caries concrescence failure of eruption of teeth dens evaginatus talon cusp dentin dysplasia dentin hypersensitivity dentinogenesis imperfecta dilaceration discoloration ectopic enamel enamel hypocalcification enamel hypoplasia turner's hypoplasia enamel pearl fluorosis fusion gemination hyperdontia hypodontia maxillary lateral incisor agenesis impaction wisdom tooth impaction macrodontia meth mouth microdontia odontogenic tumors keratocystic odontogenic tumour odontoma dens in dente open contact premature eruption neonatal teeth pulp calcification pulp stone pulp canal obliteration pulp necrosis pulp polyp pulpitis regional odontodysplasia resorption shovel-shaped incisors supernumerary root taurodontism trauma avulsion cracked tooth syndrome vertical root fracture occlusal tooth loss edentulism tooth wear abrasion abfraction acid erosion attrition periodontium (gingiva, periodontal ligament, cementum, alveolus) – gums and tooth-supporting structures cementicle cementoblastoma gigantiform cementoma eruption cyst epulis pyogenic granuloma congenital epulis gingival enlargement gingival cyst of the adult gingival cyst of the newborn gingivitis desquamative granulomatous plasma cell hereditary gingival fibromatosis hypercementosis hypocementosis linear gingival erythema necrotizing periodontal diseases acute necrotizing ulcerative gingivitis pericoronitis peri-implantitis periodontal abscess periodontal trauma periodontitis aggressive as a manifestation of systemic disease chronic perio-endo lesion teething periapical, mandibular and maxillary hard tissues – bones of jaws agnathia alveolar osteitis buccal exostosis cherubism idiopathic osteosclerosis mandibular fracture microgenia micrognathia intraosseous cysts odontogenic: periapical dentigerous buccal bifurcation lateral periodontal globulomaxillary calcifying odontogenic glandular odontogenic non-odontogenic: nasopalatine duct median mandibular median palatal traumatic bone osteoma osteomyelitis osteonecrosis bisphosphonate-associated neuralgia-inducing cavitational osteonecrosis osteoradionecrosis osteoporotic bone marrow defect paget's disease of bone periapical abscess phoenix abscess periapical periodontitis stafne defect torus mandibularis temporomandibular joints, muscles of mastication and malocclusions – jaw joints, chewing muscles and bite abnormalities bruxism condylar resorption mandibular dislocation malocclusion crossbite open bite overbite overeruption overjet prognathia retrognathia scissor bite maxillary hypoplasia temporomandibular joint dysfunction salivary glands benign lymphoepithelial lesion ectopic salivary gland tissue frey's syndrome hiv salivary gland disease necrotizing sialometaplasia mucocele ranula pneumoparotitis salivary duct stricture salivary gland aplasia salivary gland atresia salivary gland diverticulum salivary gland fistula salivary gland hyperplasia salivary gland hypoplasia salivary gland neoplasms benign: basal cell adenoma canalicular adenoma ductal papilloma monomorphic adenoma myoepithelioma oncocytoma papillary cystadenoma lymphomatosum pleomorphic adenoma sebaceous adenoma malignant: acinic cell carcinoma adenocarcinoma adenoid cystic carcinoma carcinoma ex pleomorphic adenoma lymphoma mucoepidermoid carcinoma sclerosing polycystic adenosis sialadenitis parotitis chronic sclerosing sialadenitis sialectasis sialocele sialodochitis sialosis sialolithiasis sjögren's syndrome stomatognathic system – teeth, jaws, tongue and associated soft tissues bruxism mouth breathing sleep apnea catathrenia central hypoventilation syndrome obesity hypoventilation syndrome obstructive sleep apnea periodic breathing snoring orofacial soft tissues – soft tissues around