ICD-10-CM > E00-E89 > E65-E68 > E66 E66 Overweight and obesity Non-Billable/Non-Specific Code First obesity complicating pregnancy, childbirth and the puerperium, if applicable (O99.21-) Use Additional code to identify body mass index (BMI), if known, for adults (Z68.1-Z68.45) or pediatrics (Z68.5-) Type 2 Excludes adiposogenital dystrophy (E23.6)lipomatosis dolorosa [Dercum] (E88.2)lipomatosis NOS (E88.2)Prader-Willi syndrome (Q87.11) Codes E66.0Obesity due to excess caloriesE66.01Morbid (severe) obesity due to excess caloriesE66.09Other obesity due to excess caloriesE66.1Drug-induced obesityE66.2Morbid (severe) obesity with alveolar hypoventilationE66.3OverweightE66.8Other obesityE66.81Obesity classE66.811Obesity, class 1E66.812Obesity, class 2E66.813Obesity, class 3E66.89Other obesity not elsewhere classifiedE66.9Obesity, unspecified