nature_code nature_text display_level selectable sort_sequence 000000 All natures 0 T 1 00XXXX Traumatic injuries and disorders, unspecified 2 T 3 010XXX Traumatic injuries to bones, nerves, spinal cord, unspecified 3 T 5 011XXX Dislocations 3 T 6 012XXX Fractures 3 T 7 013XXX Traumatic injuries to spinal cord 3 T 8 014XXX Traumatic injuries to nerves, except the spinal cord 3 T 9 018XXX Multiple traumatic injuries to bones, nerves, spinal cord 3 T 10 019XXX Traumatic injuries to bones, nerves, spinal cord, n.e.c. 3 T 11 01XXXX Traumatic injuries to bones, nerves, spinal cord 2 T 4 020XXX Traumatic injuries to muscles, tendons, ligaments, joints, etc., unspecified 3 T 13 021XXX Sprains, strains, tears 3 T 14 029XXX Injuries to muscles, tendons, ligaments, joints, etc., n.e.c. 3 T 15 02XXXX Traumatic injuries to muscles, tendons, ligaments, joints, etc. 2 T 12 030XXX Open wounds, unspecified 3 T 17 0311XX Amputations, fingertip 4 T 19 0319XX Amputations, except fingertip 4 T 20 031XXX Amputations 3 T 18 032XXX Animal or insect bites 3 T 21 033XXX Avulsions 3 T 22 034XXX Cuts, lacerations 3 T 23 036XXX Gunshot wounds 3 T 25 037XXX Punctures, except bites 3 T 26 038XXX Multiple open wounds 3 T 27 039XXX Open wounds, n.e.c. 3 T 28 03XXXX Open wounds 2 T 16 040XXX Surface wounds and bruises, unspecified 3 T 30 041XXX Abrasions, scratches 3 T 31 042XXX Blisters 3 T 32 043XXX Bruises, contusions 3 T 33 044XXX Foreign bodies (superficial splinters, chips) 3 T 34 045XXX Friction burns 3 T 35 048XXX Multiple surface wounds and bruises 3 T 36 049XXX Surface wounds and bruises, n.e.c. 3 T 37 04XXXX Surface wounds and bruises 2 T 29 050XXX Burns, unspecified 3 T 39 051XXX Chemical burns 3 T 40 052XXX Electrical burns 3 T 41 053XXX Heat burns, scalds 3 T 42 058XXX Multiple burns 3 T 43 059XXX Burns, n.e.c. 3 T 44 05XXXX Burns 2 T 38 060XXX Intracranial injuries, unspecified 3 T 46 061XXX Cerebral hemorrhages 3 T 47 062XXX Concussions 3 T 48 068XXX Multiple intracranial injuries 3 T 49 069XXX Intracranial injuries, n.e.c. 3 T 50 06XXXX Intracranial injuries 2 T 45 070XXX Effects of environmental conditions, unspecified 3 T 52 0710XX Effects of reduced temperature, unspecified 4 T 54 0711XX Frostbite 4 T 55 0712XX Hypothermia 4 T 56 0719XX Effects of reduced temperature, n.e.c. 4 T 59 071XXX Effects of reduced temperature 3 T 53 0720XX Effects of heat and light, unspecified 4 T 61 0721XX Heat stroke 4 T 62 0722XX Heat syncope 4 T 63 0723XX Heat fatigue 4 T 64 0724XX Heat edema 4 T 65 0728XX Multiple effects of heat and light 4 T 66 0729XX Effects of heat and light, n.e.c. 4 T 67 072XXX Effects of heat and light 3 T 60 0730XX Effects of air pressure, unspecified 4 T 69 0731XX Aero-otitis media 4 T 70 0733XX Caisson disease, bends, divers' palsy 4 T 72 0738XX Multiple effects of air pressure 4 T 73 0739XX Effects of air pressure, n.e.c. 4 T 74 073XXX Effects of air pressure 3 T 68 079XXX Effects of environmental conditions, n.e.c. 3 T 76 07XXXX Effects of environmental conditions 2 T 51 080XXX Multiple traumatic injuries and disorders, unspecified 3 T 78 081XXX Cuts, abrasions, bruises 3 T 79 082XXX Sprains and bruises 3 T 80 083XXX Fractures and burns 3 T 81 084XXX Fractures and other injuries 3 T 82 085XXX Burns and other injuries 3 T 83 086XXX Intracranial injuries and injuries to internal organs 3 T 84 089XXX Other combinations of traumatic injuries and disorders, n.e.c. 3 T 85 08XXXX Multiple traumatic injuries and disorders 2 T 77 090XXX Other traumatic injuries and disorders, unspecified 3 T 87 091XXX Asphyxiations/strangulations, suffocations 3 T 88 093XXX Electrocutions, electric shocks 3 T 90 094XXX Internal injuries to organs and blood vessels of the trunk 3 T 91 0950XX Other poisonings and toxic effects, unspecified 4 T 93 0951XX Animal or insect bites, venomous 4 T 94 0959XX Other poisonings and toxic effects, n.e.c. 4 T 96 095XXX Other poisonings and toxic effects 3 T 92 0960XX Traumatic complications, unspecified 4 T 98 0961XX Traumatic shock 4 T 99 0968XX Multiple traumatic complications 4 T 101 0969XX Traumatic complications, n.e.c. 4 T 102 096XXX Traumatic complications 3 T 97 0971XX Crushing injuries 4 T 104 0972XX Back pain, hurt back 4 T 105 0973XX Soreness, pain, hurt, except the back 4 T 106 0978XX Multiple nonspecified injuries and disorders 4 T 107 0979XX Nonspecified injuries and disorders, n.e.c. 4 T 108 097XXX Nonspecified injuries and disorders 3 T 103 099XXX Other traumatic injuries and disorders, n.e.c. 3 T 109 09XXXX Other traumatic injuries and disorders 2 T 86 0XXXXX Traumatic Injuries and Disorders 1 T 2 10XXXX Systemic diseases and disorders, unspecified 2 T 111 110XXX Diseases of the blood and blood forming organs, unspecified 3 T 113 115XXX Purpura and other hemorrhagic conditions 3 T 118 11XXXX Diseases of the blood and blood forming organs 2 T 112 120XXX Nervous system and sense organs diseases, unspecified 3 T 121 1210XX Inflammatory diseases of the central nervous system, unspecified 4 T 123 1219XX Inflammatory diseases of the central nervous system, n.e.c. 4 T 126 121XXX Inflammatory diseases of the central nervous system 3 T 122 1220XX Degenerative diseases of the central nervous system, unspecified 4 T 128 1229XX Degenerative diseases of the central nervous system, n.e.c. 4 T 131 122XXX Degenerative diseases of the central nervous system 3 T 127 1230XX Other disorders of the central nervous system, unspecified 4 T 133 1232XX Migraine 4 T 135 1239XX Other disorders of the central nervous system, n.e.c. 4 T 136 123XXX Other disorders of the central nervous system 3 T 132 1240XX Disorders of the peripheral nervous system, unspecified 4 T 138 1241XX Carpal tunnel syndrome 4 T 139 1242XX Inflammatory and toxic neuropathy, toxic polyneuropathy 4 T 140 1249XX Other disorders of the peripheral nervous system, n.e.c. 4 T 142 124XXX Disorders of the peripheral nervous system 3 T 137 1250XX Disorders of the eye, adnexa, vision, unspecified 4 T 144 1252XX Conjunctivitis--non-viral 4 T 146 1253XX Inflammation except conjunctivitis (including ophthalmia, iritis, chalazion) 4 T 147 1255XX Blindness, low vision 4 T 149 1256XX Welder's flash 4 T 150 1258XX Visual disturbances 4 T 152 1259XX Disorders of the eye, adnexa, vision, n.e.c. 4 T 153 125XXX Disorders of the eye, adnexa, vision 3 T 143 1260XX Disorders of the ear, mastoid process, hearing, unspecified 4 T 155 1261XX Deafness, hearing loss or impairment 4 T 156 1262XX Tinnitis 4 T 157 1263XX Otalgia 4 T 158 1265XX Otitis media (except aero-) 4 T 160 1269XX Disorders of ear, mastoid process, and hearing, n.e.c. 4 T 161 126XXX Disorders of the ear, mastoid process, hearing 3 T 154 129XXX Nervous system and sense organs diseases, n.e.c. 3 T 162 12XXXX Nervous system and sense organs diseases 2 T 120 130XXX Circulatory system diseases, unspecified 3 T 164 131XXX Rheumatic fever with heart involvement 3 T 165 132XXX Hypertensive disease 3 T 166 1330XX Ischemic heart disease, unspecified 4 T 168 1331XX Myocardial infarction (heart attack) 4 T 169 1332XX Angina 4 T 170 1339XX Ischemic heart disease, n.e.c. 4 T 171 133XXX Ischemic heart disease, including heart attack 3 T 167 134XXX Diseases of pulmonary circulation 3 T 172 1353XX Ill-defined descriptions and complications of heart disease 4 T 180 1359XX Other forms of heart disease, n.e.c. 4 T 181 135XXX Other forms of heart disease 3 T 176 1361XX Stroke 4 T 184 1362XX Transient ischemic attacks 4 T 185 136XXX Cerebrovascular disease 3 T 182 1370XX Diseases of arteries, arterioles, capillaries, unspecified 4 T 188 1372XX Aneurysm--nontraumatic 4 T 190 1379XX Diseases of arteries, arterioles, capillaries, n.e.c. 4 T 191 137XXX Diseases of arteries, arterioles, capillaries 3 T 187 1380XX Diseases of the veins, lymphatics, unspecified 4 T 193 1382XX Hemorrhoids 4 T 195 1383XX Phlebitis 4 T 196 1389XX Diseases of the veins, lymphatics, n.e.c. 4 T 197 138XXX Diseases of the veins, lymphatics 3 T 192 139XXX Circulatory system diseases, n.e.c. 3 T 198 13XXXX Circulatory system diseases 2 T 163 140XXX Respiratory system diseases, unspecified 3 T 200 141XXX Acute respiratory infections (including common cold) 3 T 201 1420XX Other diseases of upper respiratory tract, unspecified 4 T 203 1421XX Allergic rhinitis 4 T 204 1422XX Chronic conditions of upper respiratory tract (including chronic sinusitis, pharyngitis) 4 T 205 1429XX Other diseases of upper respiratory tract, n.e.c. 4 T 206 142XXX Other diseases of upper respiratory tract 3 T 202 1430XX Pneumonia, influenza, unspecified 4 T 208 1431XX Pneumonia 4 T 209 1432XX Influenza 4 T 210 1433XX Legionnaires' disease 4 T 211 1439XX Pneumonia, influenza, n.e.c. 4 T 212 143XXX Pneumonia, influenza 3 T 207 1440XX Chronic obstructive pulmonary disease and allied conditions, unspecified 4 T 214 1441XX Bronchitis 4 T 215 1443XX Extrinsic asthma 4 T 217 1444XX Extrinsic allergic alveolitis and pneumonitis (including farmers' lung, bagassosis) 4 T 218 1449XX Chronic obstructive pulmonary diseases and allied conditions, n.e.c. 4 T 219 144XXX Chronic obstructive pulmonary disease and allied conditions 3 T 213 1450XX Pneumoconioses, unspecified 4 T 221 1451XX Coal workers' pneumoconiosis (including anthracosis, black lung, miner's asthma) 4 T 222 1452XX Asbestosis 4 T 223 145XXX Pneumoconioses 3 T 220 1461XX Byssinosis, Mill fever 4 T 233 1462XX Metal fume fever 4 T 234 146XXX Pneumonopathy 3 T 231 1490XX Other respiratory diseases, unspecified 4 T 237 1492XX Pneumonitis, n.e.c. 4 T 239 1495XX Atelectasis, collapsed lung 4 T 242 1499XX Other respiratory system diseases, n.e.c. 4 T 243 149XXX Other respiratory system diseases 3 T 236 14XXXX Respiratory system diseases 2 T 199 150XXX Digestive system diseases and disorders, unspecified 3 T 245 152XXX Diseases of esophagus, stomach, duodenum 3 T 247 1530XX Hernia, unspecified 4 T 249 1531XX Inguinal hernia 4 T 250 1532XX Hiatal hernia 4 T 251 1533XX Ventral hernia 4 T 252 1539XX Hernia, n.e.c. 4 T 253 153XXX Hernia 3 T 248 155XXX Other diseases of intestines or peritoneum 3 T 255 159XXX Digestive system diseases and disorders, n.e.c. 3 T 257 15XXXX Digestive system diseases and disorders 2 T 244 1629XX Other diseases of urinary system, n.e.c. 4 T 269 162XXX Other diseases of urinary system 3 T 265 1630XX Diseases and disorders of the genital tract, unspecified 4 T 271 1632XX Spontaneous abortion, miscarriage 4 T 273 1639XX Diseases and disorders of the genital tract, n.e.c. 4 T 274 163XXX Diseases and disorders of the genital tract 3 T 270 169XXX Genitourinary system diseases and disorders, n.e.c. 3 T 276 16XXXX Genitourinary system diseases and disorders 2 T 258 170XXX Musculoskeletal system and connective tissue diseases and disorders, unspecified 3 T 278 171XXX Arthropathies and related disorders (arthritis) 3 T 279 1720XX Dorsopathies, unspecified 4 T 281 1721XX Sciatica 4 T 282 1722XX Lumbago 4 T 283 1723XX Disc disorders, except dislocation 4 T 284 1729XX Dorsopathies, n.e.c. 4 T 285 172XXX Dorsopathies 3 T 280 1730XX Rheumatism, except the back, unspecified 4 T 287 1731XX Bursitis 4 T 288 1732XX Synovitis 4 T 289 1733XX Tendonitis 4 T 290 1734XX Tenosynovitis 4 T 291 1735XX Ganglion/cystic tumor 4 T 292 1736XX Myositis 4 T 293 1739XX Rheumatism, except the back, n.e.c. 4 T 294 173XXX Rheumatism, except the back 3 T 286 1740XX Osteopathies, chondropathies, acquired deformities, unspecified 4 T 296 1749XX Osteopathies, chondropathies, acquired deformities, n.e.c. 4 T 298 174XXX Osteopathies, chondropathies, acquired deformities 3 T 295 179XXX Musculoskeletal system and connective tissue diseases and disorders, n.e.c. 3 T 299 17XXXX Musculoskeletal system and connective tissue diseases and disorders 2 T 277 180XXX Disorders of the skin and subcutaneous tissue, unspecified 3 T 301 1810XX Infections of the skin and subcutaneous tissue, unspecified 4 T 303 1811XX Carbuncle and furuncle 4 T 304 1812XX Cellulitis and abscess 4 T 305 1814XX Impetigo 4 T 307 1815XX Pilonidal cyst 4 T 308 1819XX Infections of the skin and subcutaneous tissue, n.e.c. 4 T 310 181XXX Infections of the skin and subcutaneous tissue 3 T 302 1820XX Dermatitis, unspecified 4 T 312 1821XX Atopic dermatitis and related conditions 4 T 313 1822XX Contact dermatitis and other eczema 4 T 314 1823XX Allergic dermatitis 4 T 315 1824XX Irritant dermatitis 4 T 316 1825XX Other contact dermatitis 4 T 317 1829XX Dermatitis, n.e.c. 4 T 319 182XXX Dermatitis 3 T 311 1830XX Other inflammatory conditions of the skin, unspecified 4 T 321 1839XX Other inflammatory conditions, n.e.c. 4 T 329 183XXX Other inflammatory conditions of the skin 3 T 320 1842XX Sebaceous cyst 4 T 333 184XXX Diseases of sebaceous glands 3 T 330 1890XX Other diseases and disorders of the skin and subcutaneous tissue, unspecified 4 T 336 1891XX Corns and callosities (including callus, clavus) 4 T 337 1897XX Chronic skin ulcers 4 T 343 1898XX Urticaria, hives 4 T 344 1899XX Other diseases and disorders of the skin and subcutaneous tissue, n.e.c. 4 T 345 189XXX Other diseases and disorders of the skin and subcutaneous tissue 3 T 335 18XXXX Disorders of the skin and subcutaneous tissue 2 T 300 1912XX Diseases and disorders of other endocrine glands 4 T 351 1919XX Endocrine, nutritional, metabolic, and immunity disorders, n.e.c. 4 T 352 191XXX Endocrine, nutritional, metabolic, and immunity disorders 3 T 348 199XXX Systemic diseases and disorders, n.e.c. 3 T 353 19XXXX Other systemic diseases and disorders 2 T 346 1XXXXX Systemic Diseases and Disorders 1 T 110 20XXXX Infectious and parasitic diseases, unspecified 2 T 355 210XXX Bacterial diseases, unspecified 3 T 357 2110XX Tuberculoses, unspecified 4 T 359 2112XX Pulmonary tuberculosis 4 T 361 211XXX Tuberculoses 3 T 358 2120XX Zoonotic bacterial diseases, unspecified 4 T 365 2129XX Zoonotic bacterial diseases, n.e.c. 4 T 373 212XXX Zoonotic bacterial diseases 3 T 364 2190XX Other bacterial diseases, unspecified 4 T 389 2192XX Diphtheria, whooping cough 4 T 391 2193XX Streptococcal sore throat and scarlatina 4 T 392 2197XX Septicemia 4 T 396 2199XX Other bacterial diseases, n.e.c 4 T 398 219XXX Other bacterial diseases 3 T 388 21XXXX Bacterial diseases 2 T 356 220XXX Viral diseases, unspecified 3 T 400 221XXX Human immunodeficiency virus (HIV) infection 3 T 401 222XXX Non-arthropod-borne viral diseases of the central nervous system 3 T 406 2230XX Viral diseases accompanied by exanthem (eruptive fever), unspecified 4 T 414 2233XX Chickenpox 4 T 417 2234XX Herpes zoster 4 T 418 2239XX Viral diseases accompanied by exanthem (eruptive fever), n.e.c. 4 T 422 223XXX Viral diseases accompanied by exanthem (eruptive fever) 3 T 413 2251XX Type A viral hepatitis (infectious hepatitis) 4 T 432 2259XX Non Type A or Type B viral hepatitis 4 T 434 225XXX Viral Hepatitis 3 T 430 2260XX Viral diseases of the conjunctiva, unspecified 4 T 436 2262XX Viral conjunctivitis (ophthalmia) 4 T 438 226XXX Viral diseases of the conjunctiva 3 T 435 2290XX Other diseases due to viruses and Chlamydiae, unspecified 4 T 441 2292XX Mumps 4 T 443 2294XX Specific diseases due to Coxsackie virus 4 T 445 2295XX Infectious mononucleosis 4 T 446 2299XX Other diseases due to viruses and Chlamydiae, n.e.c. 4 T 449 229XXX Other diseases due to viruses and Chlamydiae 3 T 440 22XXXX Viral diseases 2 T 399 237XXX Lyme disease 3 T 464 23XXXX Other arthropod-borne diseases 2 T 450 240XXX Mycoses, unspecified 3 T 467 241XXX Dermatophytosis (including athlete's foot, tinea) 3 T 468 242XXX Dermatomycosis 3 T 469 244XXX Coccidioidomycosis 3 T 471 245XXX Histoplasmosis 3 T 472 249XXX Mycoses, n.e.c. 3 T 474 24XXXX Mycoses 2 T 466 260XXX Infectious diseases peculiar to the intestines, unspecified 3 T 487 263XXX Other salmonella infections 3 T 490 264XXX Shigellosis 3 T 491 265XXX Other bacterial food poisoning (including botulism and staphylococcal food poisoning) 3 T 492 269XXX Infectious diseases peculiar to the intestines, n.e.c. 3 T 496 26XXXX Infectious diseases peculiar to the intestines 2 T 486 290XXX Other infectious and parasitic diseases, unspecified 3 T 498 293XXX Pediculosis and phthirus infestation (lice) 3 T 501 294XXX Acariasis (including scabies, chiggers, mites) 3 T 502 299XXX Other infectious and parasitic diseases, n.e.c. 3 T 505 29XXXX Other infectious and parasitic diseases 2 T 497 2XXXXX Infectious and Parasitic Diseases 1 T 354 310XXX Malignant neoplasms and tumors (cancers, carcinomas, and sarcomas), unspecified 3 T 508 3121XX Melanoma of the skin (melanocarcinoma) 4 T 516 312XXX Malignant neoplasms and tumors of the skin 3 T 514 319XXX Malignant neoplasms and tumors of other sites 3 T 527 31XXXX Malignant neoplasms and tumors (cancers, carcinomas, sarcomas) 2 T 507 3XXXXX Neoplasms, Tumors, and Cancer 1 T 506 40XXXX Symptoms, signs, and ill-defined conditions, unspecified 2 T 550 410XXX Symptoms, unspecified 3 T 552 4110XX General symptoms, unspecified 4 T 554 4111XX Loss of consciousness--not heat related 4 T 555 4112XX Convulsions, seizures 4 T 556 4113XX Malaise and fatigue 4 T 557 4114XX Dizziness 4 T 558 4115XX Non-specified allergic reaction 4 T 559 4118XX Multiple general symptoms 4 T 560 4119XX General symptoms, n.e.c. 4 T 561 411XXX General symptoms 3 T 553 4120XX Symptoms involving nervous and musculoskeletal systems, unspecified 4 T 563 4121XX Spasms or tremors, n.e.c. 4 T 564 4122XX Earache 4 T 565 4123XX Eye strain 4 T 566 4128XX Multiple symptoms involving nervous and musculoskeletal systems 4 T 567 4129XX Symptoms involving nervous and musculoskeletal systems, n.e.c. 4 T 568 412XXX Symptoms involving nervous and musculoskeletal systems 3 T 562 4130XX Symptoms involving skin and other integumentary tissue, unspecified 4 T 570 4131XX Edema (including dropsy) 4 T 571 4139XX Symptoms involving skin and other integumentary tissue, n.e.c. 4 T 575 413XXX Symptoms involving skin and other integumentary tissue 3 T 569 4140XX Symptoms involving head and neck, unspecified 4 T 577 4141XX Headache, except migraine 4 T 578 4142XX Loss of voice, voice disturbances 4 T 579 4148XX Multiple symptoms involving head and neck 4 T 580 4149XX Symptoms involving head and neck, n.e.c. 4 T 581 414XXX Symptoms involving head and neck 3 T 576 4150XX Symptoms involving cardiovascular system, unspecified 4 T 583 4151XX Unspecified tachycardia (rapid heart beat) 4 T 584 4158XX Multiple symptoms involving cardiovascular system 4 T 587 4159XX Symptoms involving cardiovascular system, n.e.c. 4 T 588 415XXX Symptoms involving cardiovascular system 3 T 582 4160XX Symptoms involving respiratory system and chest, unspecified 4 T 590 4161XX Hyperventilation 4 T 591 4164XX Chest pain 4 T 594 4168XX Multiple symptoms involving respiratory system and chest 4 T 595 4169XX Symptoms involving respiratory system and chest, n.e.c. 4 T 596 416XXX Symptoms involving respiratory system and chest 3 T 589 4170XX Symptoms involving digestive and urinary system, unspecified 4 T 598 4171XX Nausea and vomiting 4 T 599 4175XX Abdominal pain, unspecified 4 T 603 4178XX Multiple symptoms involving digestive or urinary system 4 T 604 4179XX Symptoms involving digestive and urinary system, n.e.c. 4 T 605 417XXX Symptoms involving digestive and urinary system 3 T 597 418XXX Multiple symptoms 3 T 606 419XXX Other symptoms, n.e.c. 3 T 607 41XXXX Symptoms 2 T 551 425XXX Abnormal findings from function studies 3 T 618 426XXX Abnormal findings from histological and immunological studies 3 T 619 429XXX Other abnormal findings 3 T 621 42XXXX Abnormal findings 2 T 608 480XXX Multiple symptoms, signs, and ill-defined conditions, unspecified 3 T 623 481XXX Multiple chemical sensitivity 3 T 624 489XXX Multiple symptoms, signs, and ill-defined conditions, n.e.c. 3 T 625 48XXXX Multiple symptoms, signs, and ill-defined conditions 2 T 622 49XXXX Symptoms, signs, and ill-defined conditions, n.e.c. 2 T 626 4XXXXX Symptoms, Signs, and Ill-Defined Conditions 1 T 549 51XXXX Damage to prosthetic devices 2 T 628 520XXX Mental disorder or syndrome, unspecified 3 T 630 5210XX Anxiety, stress, neurotic disorders, unspecified 4 T 632 5211XX Post-traumatic anxiety--acute 4 T 633 5212XX Post-traumatic anxiety--chronic 4 T 634 5213XX Panic disorder 4 T 635 5214XX Neurotic reaction to stress 4 T 636 5218XX Multiple anxiety, stress, neurotic disorders 4 T 637 5219XX Neurotic disorders, n.e.c. 4 T 638 521XXX Anxiety, stress, neurotic disorders 3 T 631 5220XX Organic mental disorders--neurotic or psychotic, unspecified 4 T 640 522XXX Organic mental disorders--neurotic or psychotic 3 T 639 529XXX Mental disorders or syndromes, n.e.c. 3 T 645 52XXXX Mental disorders or syndromes 2 T 629 59XXXX Other diseases, conditions, and disorders, n.e.c. 2 T 646 5XXXXX Other Diseases, Conditions, and Disorders 1 T 627 8XXXXX Multiple diseases, conditions, and disorders 1 T 647 9999XX Nonclassifiable 4 T 649