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AA02 Malignant otitis externa International Classification of Diseases for Mortality and Morbidity Statistics, 11th Revision, v2024-01 Malignant otitis externa is a rare life-threatening infective complication of otitis externa. It is due in the majority of cases to Pseudomonas aeruginosa. Organisms penetrate from the external ear canal into the surrounding deeper tissues resulting in osteomyelitis of the temporal bone and risks of damage to adjacent cranial nerves and septic thrombo-emboli to the brain. Advanced age, uncontrolled diabetes mellitus and immunosuppression are risk factors.
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] XA6ZY6 External Ear – XA4E71 Pinna –– XA6B58 Helix of pinna ––– XA9A86 Crus of helix ––– XA9M10 Apex of helix ––– XA7AB8 Spine of helix ––– XA1BZ8 Tail of helix –– XA7V14 Antihelix ––– XA96Q7 Crura of antihelix ––– XA5LW2 Scaphoid fossa of pinna –– XA8W55 Concha of pinna ––– XA5KM5 Cymba conchae ––– XA8D58 Conchal bowl of pinna –– XA3RC6 Triangular fossa of pinna –– XA2N71 Tragus of pinna –– XA5VK5 Intertragic notch of pinna –– XA0TW7 Earlobe –– XA7RR9 Antitragus of pinna –– XA3S47 Posterior surface of pinna ––– XA6NU1 Antihelical fossa ––– XA6KW8 Eminence of concha ––– XA0H47 Eminence of scapha ––– XA8VK6 Eminence of triangular fossa –– XA4DV9 Retroauricular sulcus – XA3UC1 External auditory canal –– XA5GS5 External auditory meatus –– XA5K66 Ceruminal gland – XA9E26 Skin of auricle Infectious agent - multiple selections are allowed [select] XN4E7 Leptospira weilii – XN3BQ Streptococcus salivarius XN77E Leptospira wolffii – XN9FP Streptococcus sanguinis XN5UB Leptospira genomospecies 1 (alstonii) – XN0XM Streptococcus sobrinus XN2JD Leptotrichia – XN5SE Streptococcus suis XN734 Leptotrichia buccalis – XN4LM Streptococcus thermophilus XN4GY Leptotrichia goodfellowii – XN1TV Streptococcus uberis XN0SF Leptotrichia hofstadii – XN0Z2 Streptococcus vestibularis XN4SA Leptotrichia hongkongensis XN7PP Tropheryma XN7NF Leptotrichia shahii XN5P4 Tropheryma whipplei XN6QY Leptotrichia trevisanii XN0SE Clostridioides difficile XN5SN Leptotrichia wadei XN87X Bacteria, neither Gram Negative nor Gram Positive XN90V Moraxella XN2DX Borrelia XN8G6 Morganella XN7GL Borrelia afzelii XN1W2 Mycoplasma XN13C Borrelia burgdorferi XN3NR Mycoplasma fermentans XN4VZ Borrelia garinii XN9UG Mycoplasma genitalium XN3PD Borrelia hermsii XN674 Mycoplasma hyorhinis XN2P3 Borrelia miyamotoi XN3AD Mycoplasma penetrans XN6VH Borrelia parkeri XN4NV Mycoplasma pneumoniae XN5R4 Borrelia recurrentis XN69X Neisseria XN140 Borrelia vincentii XN59Y Neisseria gonorrhoeae XN2NR Mycobacterium XN1DV Neisseria meningitidis XN6YB Mycobacterium africanum – XN3CR Neisseria meningitidis serogroup A XN8AB Mycobacterium bovis – XN8FU Neisseria meningitidis serogroup B XN8N3 Mycobacterium canettii – XN7EM Neisseria meningitidis serogroup C XN4MR Mycobacterium caprae – XN03X Neisseria meningitidis serogroup W XN9H9 Mycobacterium colombiense – XN0C2 Neisseria meningitidis serogroup X XN8FC Mycobacterium indicus pranii – XN5H0 Neisseria meningitidis serogroup Y XN5TS Mycobacterium leprae XN8ST Neorickettsia XN3T2 Mycobacterium microti XN7C8 Neorickettsia sennetsu XN7H2 Mycobacterium pinnipedii XN3U2 Pasteurella XN1N2 Mycobacterium tuberculosis XN30D Pasteurella multocida XN96Q Non-tuberculous mycobacterium XN1ZM Pleisiomonas – XN3L9 Mycobacterium kansasii XN3BS Proteus – XN5C1 Mycobacterium malmoense XN9ZF Proteus mirabilis – XN53D Mycobacterium xenopi XN9DS Proteus morganii – XN6PL Mycobacterium asiaticum XN7PE Proteus penneri – XN4MW Mycobacterium simiae XN118 Proteus vulgaris – XN975 Mycobacterium szulgai XN7R2 Providencia – XN74T Mycobacterium scrofulaceum XN2PG Providencia rettgeri – XN7YR Mycobacterium haemophilum XN022 Pseudomonas – XN8ZX Mycobacterium fortuitum XN5L6 Pseudomonas aeruginosa – XN8RB Mycobacterium marinum XN3JP Pseudomonas oryzihabitans – XN9M0 Mycobacterium ulcerans XN52E Pseudomonas mallei – XN3D3 Mycobacterium chelonei XN8J7 Pseudomonas plecoglossicida – XN97H Mycobacterium avium complex XN8AA Pseudomonas pseudomallei –– XN5LZ Mycobacterium avium XN4YH Rickettsia ––– XN8FF Mycobacterium avium hominissuis XN9YP Rickettsia africae ––– XN5NW Mycobacterium avium paratuberculosis XN7WV Rickettsia akari ––– XN145 Mycobacterium avium silvaticum XN23V Rickettsia australis –– XN3ZQ Mycobacterium intracellulare XN8U4 Rickettsia conorii –– XN077 Mycobacterium chimaera XN6W8 Rickettsia felis – XN4TQ Mycobacterium abscessus complex XN9NE Rickettsia helvetica –– XN7V4 Mycobacterium abscessus subsp. abscessus XN5NY Rickettsia hoogstraalii –– XN5SW Mycobacterium abscessus subsp. massiliense XN3XV Rickettsia japonica –– XN017 Mycobacterium abscessus subsp. bolletii XN8SY Rickettsia prowazekii – XN44M Mycobacterium chelonae XN33Q Rickettsia rickettsii XN1N6 Rickettsia sibirica XN2AR Rickettsia typhi XN0QE Salmonellae XN5VC Salmonella enterica spp. – XN0UV Salmonella Paratyphi –– XN1K5 Salmonella paratyphi A –– XN322 Salmonella paratyphi B –– XN5TR Salmonella paratyphi C – XN4AM Salmonella Typhi – XN7U5 Salmonella Panama – XN97K Salmonella Weltevreden – XN13V Salmonella Wandsworth – XN3DF Salmonella Virchow – XN4QY Salmonella Give – XN3AE Salmonella Gaminara – XN0N5 Salmonella Agona – XN5SM Salmonella Kiambu – XN3TU Salmonella Thompson – XN15L Salmonella Typhimurium – XN8SF Salmonella Saintpaul – XN2MU Salmonella Stanley – XN0LX Salmonella Strathcona – XN5WE Salmonella Senftenberg – XN291 Salmonella Tennessee – XN87G Salmonella Newport – XN5TM Salmonella Hartford – XN1QX Salmonella Oranienburg – XN2SZ Salmonella Poona – XN36N Salmonella Kedougou – XN5LV Salmonella Litchfield – XN4LH Salmonella Mbandaka – XN1FK Salmonella Montevideo – XN3UH Salmonella Mikawasima – XN7QM Salmonella Concord – XN8RF Salmonella Cubana – XN39C Salmonella Infantis – XN6JL Salmonella Havana – XN1W7 Salmonella Enteritidis – XN0Q7 Salmonella Bareilly – XN4MS Salmonella Braenderup – XN3KA Salmonella Brandenburg – XN0NU Salmonella Choleraesuis – XN910 Salmonella Bredeney – XN52S Salmonella Nchanga – XN8F6 Salmonella Lille – XN7EC Salmonella Sandiego – XN2DJ Salmonella enterica subspecies enterica serovar 4,5,12:i:- – XN7PN Salmonella enterica subspecies enterica serovar 4,[5],12:i:- XN2DW Salmonella bongori spp XN71D Serratia spp XN2V6 Serratia marcescens XN7HG Shigella spp XN7Y2 Shigella flexneri XN8RN Shigella boydii XN285 Shigella dysenteriae XN9M9 Shigella sonnei XN23Z Spirillum XN0J7 Spirillum minus XN78V Spirillum pulli XN17K Spirillum volutans XN96A Spirillum winogradskyi XN708 Streptobacillus XN91U Streptobacillus moniliformis XN1L0 Stenotrophomonas XN0AD Stenotrophomonas maltophilia XN36C Treponema XN76V Treponema carateum XN711 Treponema pallidum – XN6AL Treponema pallidum carateum – XN35Z Treponema pallidum endemicum – XN030 Treponema pallidum pallidum – XN46P Treponema pallidum pertenue XN1R2 Ureaplasma XN8RL Vibrio XN7N1 Vibrio cholerae – XN8P1 Vibrio cholerae O1, biovar cholerae – XN62R Vibrio cholerae O1, biovar eltor – XN8KD Vibrio cholerae O139 XN1AA Vibrio parahaemolyticus XN44G Vibrio vulnificus XN4QG Yersinia XN91V Yersinia enterocolitica XN6QS Yersinia pestis XN6K8 Yersinia pseudotuberculosis XN65H Bacteroides XN2R7 Bacteroides fragilis XN9EB Cronobacter XN74M Bacteria XN2YF Cronobacter sakazakii XN5PZ Gram Negative Bacteria XN9AS Brevundimonas XN25B Acinetobacter XN8W4 Brevundimonas diminuta XN8LS Acinetobacter baumannii XN2F0 Brevundimonas vesicularis XN5YN Acinetobacter junii XN1J7 Aeromonas XN0DS Acinetobacter nosocomialis XN40Z Aeromonas hydrophila XN2QH Acinetobacter pittii XN0XY Aeromonas caviae XN048 Anaplasma XN4X0 Herbaspirillum XN1MH Anaplasma phagocytophilum XN7QA Herbaspirillum huttiense XN3NJ Bartonella XN706 Elizabethkingia XN0W4 Bartonella bacilliformis XN6BA Elizabethkingia anophelis XN3F6 Bartonella clarridgeiae XN6C4 Elizabethkingia meningoseptica XN5J5 Bartonella elizabethae XN15X Ralstonia XN5SH Bartonella grahamii XN6AH Ralstonia picketti XN862 Bartonella henselae XN694 Ralstonia mannitolilytica XN302 Bartonella koehlerae XN9VM Ralstonia insidiosa XN14D Bartonella quintana XN3NY Raoultella XN43H Bartonella rochalimae XN0MD Raoultella ornithinolytica XN6KD Bartonella vinsonii XN6PA Orientia XN94Y Bartonella washoensis XN675 Orientia tsutsugamushi XN9W3 Bordetella XN2QM Gram Positive Bacteria XN173 Bordetella bronchiseptica XN3G0 Actinomyces XN23B Bordetella pertussis XN0GV Actinomyces gerencseriae XN7LQ Bordetella parapertussis XN15T Actinomyces israelii XN22N Brucella XN8HN Actinomyces species XN7A8 Brucella abortus XN8EK Actinomycetales XN84J Brucella canis XN8P7 Actinomadura XN7ZW Brucella melitensis XN9ZE Bacillus XN3UP Brucella suis XN94F Bacillus anthracis XN01M Burkholderia XN8PY Bacillus cereus XN351 Burkholderia gladioli XN33F Bifidobacterium XN6Y3 Burkholderia mallei XN0PT Bifidobacterium dentium XN3LD Burkholderia pseudomallei XN198 Clostridium XN335 Burkholderia cepacia complex XN2JN Clostridium botulinum – XN06D Burkholderia stabilis XN7J5 Clostridium perfringens – XN0ZW Burkholderia anthina XN4LP Clostridium sordellii – XN15B Burkholderia contaminans XN5NQ Clostridium tetani XN7US Campylobacter XN3NT Corynebacterium XN0BA Campylobacter coli XN9N1 Corynebacterium diphtheriae XN3EN Campylobacter fetus XN78S Corynebacterium minutissimum XN4Q5 Campylobacter jejuni XN752 Corynebacterium striatum XN27H Chlamydia XN3MP Corynebacterium tenuis XN9EE Chlamydia pneumoniae XN1F7 Enterococcus XN4S7 Chlamydia psittaci XN2H4 Enterococcus faecalis XN4Q4 Chlamydia trachomatis XN51E Enterococcus faecium XN0FZ Citrobacter XN0DT Enterococcus avium XN0M3 Citrobacter freundii XN3XY Enterococcus casseliflavus XN5H6 Coxiella XN724 Enterococcus durans XN0QS Coxiella burnetii XN8BQ Enterococcus gallinarum XN9M7 Ehrlichia XN4ZZ Enterococcus mundtii XN293 Ehrlichia canis XN3QK Enterococcus raffinosus XN4GW Ehrlichia chaffeensis XN494 Erysipelothrix XN2YH Ehrlichia ewingii XN4FJ Erysipelothrix rhusiopathiae XN1VF Eikenella XN4D1 Listeria XN9W5 Enterobacter XN39H Listeria ivanovii XN3YM Enterobacter cloacae XN602 Listeria monocytogenes XN4WC Escherichia XN20K Nocardia XN6P4 Escherichia coli XN2BK Nocardia asteroides – XN88S Enteroinvasive Escherichia coli XN1LG Nocardia brasiliensis – XN2U0 Enteropathogenic Escherichia coli XN5M7 Propionibacterium – XN81Z Enterotoxigenic Escherichia coli XN27L Propionibacterium propionicus – XN108 Shiga toxin-producing Escherichia coli XN9ZG Staphylococcus –– XN5NF Enterohaemorrhagic Escherichia coli XN6BM Staphylococcus aureus – XN55V Enteroaggregative Escherichia coli – XN4B5 Panton-Valentine Leukocidin–producing Staphylococcus aureus XN6MP Escherichia hermannii XN0PR Staphylococcus auricularis XN2S7 Pseudescherichia vulneris XN0H1 Staphylococcus capitis XN94G Francisella XN99G Staphylococcus caprae XN6HJ Francisella philomiragia XN95B Staphylococcus cohnii XN0BX Francisella tularensis XN8KJ Staphylococcus epidermidis – XN4ZY Francisella novicida XN2GD Staphylococcus haemolyticus XN4LF Fusobacterium XN09P Staphylococcus leei XN7B1 Fusobacterium necrophorum XN4N7 Staphylococcus lugdunensis XN5MA Fusobacterium novum XN8WC Staphylococcus pasteuri XN4P8 Fusobacterium nucleatum XN6FH Staphylococcus pettenkoferi XN911 Fusobacterium polymorphum XN9X8 Staphylococcus schleiferi XN2HK Haemophilus XN2HN Staphylococcus sciuri XN6MB Haemophilus ducreyi XN7RE Staphylococcus simulans XN1P6 Haemophilus influenzae XN4C9 Staphylococcus warneri – XN1BX Haemophilus influenzae aegyptius XN7TQ Staphylococcus xylosus – XN0FG Haemophilus influenzae type B XN567 Staphylococcus hominis XN6XR Helicobacter XN3NM Streptococcus XN0YS Helicobacter bilis XN1V3 Alpha-hemolytic Streptococcus XN0TD Helicobacter bizzozeronii – XN3PW Streptococcus pneumoniae XN42L Helicobacter canis – XN9LA Streptococcus viridans XN354 Helicobacter cinaedi XN1AF Beta-haemolytic Streptococcus XN6JN Helicobacter felis XN2NS Gamma-haemolytic Streptococcus XN9X3 Helicobacter ganmani XN6LP Streptococcus, group A XN8PN Helicobacter hepaticus – XN7YG Streptococcus pyogenes XN3DY Helicobacter pylori XN2M1 Streptococcus, group B XN9D7 Helicobacter salomonis – XN0KC Streptococcus agalactiae XN079 Helicobacter suis XN518 Group C Streptococcus XN620 Klebsiella – XN0TY Streptococcus zooepidemicus XN027 Klebsiella granulomatis XN5KC Streptococcus, group D XN7WL Klebsiella oxytoca – XN6KJ Streptococcus bovis XN741 Klebsiella pneumoniae – XN625 Streptococcus equinus XN7EJ Kingella kingae XN8BJ Group E Streptococcus XN3SZ Legionella XN6BB Group F Streptococcus XN14Z Legionella longbeachae XN84N Group G Streptococcus XN9YS Legionella pneumophila – XN8UN Streptococcus dysgalactiae XN9RA Leptospira XN40Y Group H Streptococcus XN1R8 Leptospira alexanderi – XN39R Streptococcus anginosus XN7D2 Leptospira borgpetersenii – XN3L7 Streptococcus canis XN9K9 Leptospira broomii – XN0FR Streptococcus constellatus XN5HC Leptospira fainei – XN4PA Streptococcus iniae XN20F Leptospira inadai – XN67P Streptococcus intermedius XN78P Leptospira interrogans – XN5BP Streptococcus mitis XN110 Leptospira kirschneri – XN2RH Streptococcus mutans XN481 Leptospira kmetyi – XN4B2 Streptococcus oralis XN6NU Leptospira licerasiae – XN18T Streptococcus parasanguinis XN4KP Leptospira noguchii – XN58W Streptococcus peroris XN01X Leptospira santarosai – XN6KE Streptococcus pseudopneumoniae XN4FL Leptospira species – XN5DB Streptococcus ratti
synonyms Malignant otitis externa Necrotising otitis externa Pseudomonas aeruginosa osteomyelitis of the temporal bone
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