Index abbreviations NEC "Not elsewhere classifiable" This abbreviation in the index represents "other specified" when a specific code is not available for a condition the index directs the coder to the "other specified" code in the tabular. b. Tabular abbreviations NEC "Not elsewhere classifi...
001-139InfectiousandParasiticDiseases140-239Neoplasms240-279Endocrine,NutritionalandMetabolicDiseases280-289DiseasesoftheBloodandBlood-forming Organs290-319MentalDisorders320-389DiseasesoftheNervousSystemandSense Organs390-459DiseasesoftheCirculatorySystem460-519DiseasesoftheRespiratorySystem520-579DiseasesoftheDigestive...