NLSY79 Attachment 8: Health Codes

National Longitudinal Survey of Youth - 1979 Cohort

NLSY79 Attachment 8: Health Codes

General Information on Health Codes

The health section of the NLS survey elicits health problems that limit the amount or kind of work the respondent can do. Those health problems are coded using a modified version of the International Classification of Diseases (ICD-9) codes taken from the World Health Organization, International Classification of Diseases, Ninth Revision, 2 vols., WHO, Geneva, 1977 (vol. 1) and 1978 (vol. 2).

The health consolidation code represents the most complete description possible of the respondent's main cause of limitation in work gathered from a reading of the whole health section. It is coded using the modified ICD-9 codes after the rest of the health section has been coded. The health consolidation code, thus, represents the current (proximal) description of the respondent's main cause of limitation in work, and not an underlying cause (remote) preceding the current complaint.

The NLS health codes correspond to the ICD-9 codes with the decimal point deleted, except for the supplemental V, E, and M ICD-9 codes. The supplemental ICD-9 codes were modified by dropping the alpha code and adding the remaining numeric portion of the supplemental codes to a 5-digit number. The following is the numeric conversion for the supplemental codes: V codes = 10000+, E codes = 11000+, and M codes = 12000+. (Zero (0) means no health problem). The changes were necessary because alphas are not used as variable values in the NLS data.

A consolidated list of the modified ICD-9 and the supplemental codes and the medical terms associated with them is attached. For more detail, see the International Classification of Diseases, Ninth Revision. Also included is a list of numeric codes for the body parts that are affected by health problems; these codes were developed by NORC for the 1979-1981 health sections.

Codes for Parts of Body in Health Section

01 Brain, CNS, spinal cord 49 Penis
02 Peripheral nervous system 50 Other male reproductive system; scrotum; vas deferens; testes
03 Emotions, "nerves" 51 Breast, nipple
04 Heart 52 Vulva, clitoris
05 Blood, spleen 53 Vagina, cervix, uterus
06 Vascular system 54 Other female reproductive system; fallopian tubes; ovaries
07 Lymphatic system, lymph glands 55 Menstruation
08 Pituitary gland 56 Skin
09 Thyroid gland 57 Hair
10 Adrenal gland 58 Scalp
11 Other endocrine glands; endocrine system; pineal gland; parathyroid gland; thymus 59 Nails
12 Eye 60 Head, skull
13 Vision 61 Face, forehead, lips
14 Lacrimal gland and duct 62 Jaw
15 Eyelid 63 Chin
16 Ear (inner and outer) 64 Neck, cervical vertebrae
17 Hearing 65 Back, dorsal spine
18 Nose 66 Low back, lumbar spine
19 Smell 67 Trunk
20 Tonsils and adenoids 68 Chest
21 Sinus 69 Chest wall, external chest; axilla
22 Vocal cords, larynx 70 Collarbone
23 Speech 71 Ribs
24 Throat, pharynx 72 Side, flank
25 Lung, trachea and bronchi 73 Shoulder
26 Breathing 74 Arm
27 Mouth and tongue 75 Upper arm
28 Gums 76 Elbow
29 Teeth 77 Lower arm
30 Esophagus 78 Wrist
31 Stomach 79 Hand (palm)
32 Upper digestive tract 81 Fingers
33 Liver 82 Pelvis
34 Biliary tract 83 Groin
35 Gallbladder 84 Buttocks
36 Pancreas 85 Hip
37 Abdomen 86 Leg
38 Upper abdomen 87 Upper leg, thigh
39 Lower abdomen 88 Knee, kneecap
40 Intestine and colon 89 Lower leg
41 Rectum 90 Ankle
42 Anus 91 Foot
43 Lower digestive tract 92 Toes
44 Digestive system 93 Muscles, tendons, ligaments NOS *
45 Kidneys 94 Bone(s) NOS
46 Bladder 95 Joints NOS
47 Prostate 96 "Entire body"
48 Other genitourinary tract; urethra; ureter 80 Other NOS
 
NOTE: NOS stands for "not otherwise specified"

Modified ICD-9 Codes

0010 - 0099 Intestinal infectious diseases 4600 - 5199 Diseases of the respiratory system
0100 - 0189 Tuberculosis 5200 - 5799 Diseases of the digestive system
0200 - 0279 Zoonotic bacterial diseases 5800 - 6299 Diseases of genitourinary system
0300 - 0419 Other bacterial diseases 6300 - 6769 Complications of pregnancy, childbirth and the puerperium
0450 - 0499 Poliomyelitis and other non-arthropod-borne viral diseases of central nervous system 6800 - 7099 Diseases of the skin and subcutaneous tissue
0500 - 0579 Viral diseases accompanied by exanthem 7100 - 7399 Diseases of the musculoskeletal system and connective tissue
0600 - 0669 Arthropod-borne viral diseases 7400 - 7599 Congenital anomalies
0700 - 0799 Other diseases due to viruses and Chlamydiae 7600 - 7799 Certain conditions originating in the perinatal period
0800 - 0889 Rickettsioses and other arthropod-borne diseases 7800 - 7999 Symptoms, signs and ill-defined conditions
0900 - 0999 Syphilis and other venereal diseases 8000 - 8299 Fracture of skull, spine, trunk, and limbs
1000 - 1049 Other spirochaetal diseases 8300 - 8399 Dislocation without fracture
1100 - 1189 Mycoses 8400 - 8489 Sprains and strains of joints and adjacent muscles
1200 - 1299 Helminthiases 8500 - 8549 Intracranial injury, excluding those with skull fracture
1300 - 1369 Other infectious and parasitic diseases 8600 - 8699 Internal injury of chest, abdomen and pelvis
1370 - 1399 Late effects of infectious and parasitic diseases 8700 - 8979 Open wound of head, neck, trunk, and limbs
1400 - 2089 Malignant neoplasms 9000 - 9049 Injury to blood vessels
2100 - 2299 Benign neoplasms 9050 - 9099 Late effects of injuries, poisoning, toxic effects and other external causes
2300 - 2349 Carcinoma in situ 9100 - 9249 Superficial injury and contusion with intact skin surface
2350 - 2399 Neoplasms of uncertain behaviour or of unspecified nature 9250 - 9299 Crushing injury
2400 - 2799 Endocrine, nutritional and metabolic diseases and immunity disorders 9300 - 9399 Effects of foreign body entering through orifice
2800 - 2899 Diseases of blood and blood-forming organs 9400 - 9499 Burns
2900 - 3169 Mental disorders, except mental retardation 9500 - 9579 Injury to nerves and spinal cord
3170 - 3199 Mental retardation 9580 - 9599 Certain traumatic complications and unspecified injuries
3200 - 3499 Diseases and disorders of the nervous system 9600 - 9799 Poisoning by drugs, medicaments and biological substances
3500 - 3599 Diseases of peripheral nervous system 9800 - 9899 Toxic effects of substances chiefly nonmedicinal as to source
3600 - 3799 Disorders of the eye and adnexa 9900 - 9959 Other and unspecified effects of external causes
3800 - 3899 Diseases of ear and mastoid process 9960 - 9999 Complications of surgical and medical care not elsewhere classified
3900 - 4599 Diseases of circulatory system  

Modified V Codes

Supplementary Classification of Factors Influencing Health Status and Contact with Health Services

10010 - 10079 Persons with potential health hazards related to communicable diseases 10400 - 10499 Persons with a condition influencing their health status
10100 - 10199 Persons with potential health hazards related to personal and family history 10500 - 10599 Persons encountering health services for specific procedures and aftercare
10200 - 10289 Persons encountering health services in circumstances related to reproduction and development 10600 - 10689 Persons encountering health services in other circumstances
10300 - 10399 Healthy liveborn infants according to birth type 10700 - 10829 Persons without reported diagnosis encountered during examination and investigation of individuals and populations

Modified E Codes

Supplementary Classification of External Causes of Injury and Poisoning

11800 - 11807 Railway accidents 11880 - 11888 Accidental falls
11810 - 11819 Motor vehicle traffic accidents 11890 - 11899 Accidents caused by fire and flames
11820 - 11825 Motor vehicle nontraffic accidents 11900 - 11909 Accidents due to natural and environmental factors
11826 - 11829 Other road vehicle accidents 11910 - 11915 Accidents caused by submersion, suffocation and foreign bodies
11830 - 11838 Water transport accidents 11916 - 11929 Other accidents and late effects of accidental injury
11840 - 11845 Air and space transport accidents 11930 - 11949 Drugs, medicaments and biological substances causing adverse effects in therapeutic use
11846 - 11848 Vehicle accidents not elsewhere classifiable 11950 - 11959 Suicide and self-inflicted injury
11850 - 11858 Accidental poisoning by drugs, medicaments and biologicals 11960 - 11969 Homicide and injury purposely inflicted by other persons
11860 - 11869 Accidental poisoning by other solid and liquid substances, gases and vapours 11970 - 11978 Legal intervention
11870 - 11876 Misadventures to patients during surgical and medical care 11980 - 11989 Injury undetermined whether accidentally or purposely inflicted
11878 - 11879 Surgical and medical procedures as the cause of abnormal reaction of patient or later complication 11990 - 11999 Injury resulting from operations of war

Modified M Codes

Coded Nomenclature for Morphology of Neoplasms

12800 - 12804 Neoplasms NOS* and epithelial neoplasms NOS 12910 - 12911 Trophoblastic neoplasms and mesonephromas
12805 - 12808 Papillary and squamous cell neoplasms 12912 - 12917 Blood vessel and lymphatic vessel tumours
12809 - 12811 Basal cell neoplasms 12918 - 12920 Osteomas and osteosarcomas
12812 - 12813 Transitional cell papillomas and carcinomas 12921 - 12924 Chondromatous neoplasms
12814 - 12838 Adenomas and adenocarcinomas 12925 - 12926 Giant cell and miscellaneous bone tumours
12839 - 12843 Adnexal, skin appendage and mucoepidermoid neoplasms 12927 - 12934 Odontogenic tumours
12844 - 12849 Cystic, mucinous and serious neoplasms 12935 - 12937 Miscellaneous tumours
12850 - 12855 Ductal, lobular, medullary, and acinar cell neoplasms 12938 - 12948 Gliomas
12856 - 12858 Complex epithelial neoplasms 12949 - 12953 Neuropitheliomatous neoplasms and meningiomas
12859 - 12867 Specialized gonadal neoplasms 12954 - 12958 Nerve sheath and granular cell tumours and alveolar soft part sarcoma
12868 - 12871 Paragangliomas and glomus tumors 12959 - 12963 Lymphomas, NOS or diffuse
12872 - 12880 Naevi, melanomas, soft tissue tumors and sarcomas NOS 12964 Reticulosarcomas
12881 - 12884 Fibromatous and myxomatous neoplasms 12965 - 12966 Hodgkin's disease
12885 - 12888 Lipomatous neoplasms 12969 - 12970 Lymphomas, nodular or follicular, and mycosis fungoides
12889 - 12892 Myomatous neoplasms 12971 - 12972 Miscellaneous reticuloendothelial neoplasms
12893 - 12899 Complex mixed and stromal neoplasms 12973 - 12975 Plasma cell, mast cell, and Burkitt's tumours
12900 - 12903 Fibroepithelial neoplasms 12980 - 12994 Leukaemias
12904 - 12905 Synovial and mesothelial neoplasms 12995 - 12997 Miscellaneous myeloproliferative and lymphoproliferative disorders
12906 - 12909 Germ cell neoplasms  
 
* NOTE: NOS stands for not otherwise specified.