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Excludes: secondary and unspecified neoplasm of lymph nodes (C77.-). (ICD-10, 1: 215) |
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There are several specialty-based adaptations of the ICD originating in different national or international bodies (dermatology, stemming from the British Association of Dermatologists; and, under development, rheumatology and orthopaedics from the International League against Rheumatism). (ICD 10, 2, vol. 56). |
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The ICD is also directly responsive to other types of changes in the world. Diseases themselves die (smallpox), are superseded (Gay-Related Immune Disorder (GRID) becomes AIDS), are newly born (radiation sickness with the discovery of radium), or fall into disrepute (hysteria or neurasthenia). Since the ICD is a statistical classification, a disease with no incidence is of no interest. Thus smallpox was still well defined within ICD-9, |
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| 050 | Smallpox | | | | | Excludes: | | | arthropod-borne viral diseases (060.0066.9) | | | | Boston exanthem (048) | | | 50.1 | | Variola major | | | | hemorrhagic (pustular) smallpox Malignant smallpox | | Purpura variolosa | | | | | | 50.1 | | Alastrim | | | | Variola minor | | | 50.2 | | Modified smallpox | | | | Varioloid | | | 050.9 | | | Smallpox, unspecified | | (ICD 9CM: 11) | | | | |
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By ICD-10 this had collapsed into: "BO3 Smallpox," with a footnote: "In 1980 the thirty-third World Health Assembly declared that smallpox had been eradicated. The classification is maintained for surveillance purposes" (ICD-10, 1, 150). Or again, malnutrition is defined in relativistic fashionas the population changes so does the definition: |
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The degree of malnutrition is usually measured in terms of weight, expressed in standard deviations from the mean of the relevant reference population. When one or more previous measurements are available, lack of weight gain in children, or evidence of weight loss in children or adults, is usually indicative of malnutrition. When only one measurement is available, the diagnosis is based on probabilities and is not definitive without other clinical or laboratory tests. In the exceptional circumstances that no measurement of weight is available, reliance should be placed on clinical evidence. (ICD-10, 1: 290) |
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In these cases, then, the fact that the world is changing is reflected directly in the classification scheme. Another source for this recogni- |
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