Overweight and obesity (E66)

ICD-10 Index
- Endocrine, nutritional and metabolic diseases (E00–E90)
  - Overweight, obesity and other hyperalimentation (E65-E68)
    - - E66 - Overweight and obesity NON-BILLABLE CODE
      - E66.0 - Obesity due to excess calories NON-BILLABLE CODE
      - E66.01 - Morbid (severe) obesity due to excess calories BILLABLE CODE
      - E66.09 - Other obesity due to excess calories BILLABLE CODE
      - E66.1 - Drug-induced obesity BILLABLE CODE
      - E66.2 - Morbid (severe) obesity with alveolar hypoventilation BILLABLE CODE
      - E66.3 - Overweight BILLABLE CODE
      - E66.8 - Other obesity BILLABLE CODE
      - E66.9 - Obesity, unspecified BILLABLE CODE

Clinical Information for Overweight and obesity (E66)

Obesity - A status with BODY WEIGHT that is grossly above the recommended standards, usually due to accumulation of excess FATS in the body. The standards may vary with age, sex, genetic or cultural background. In the BODY MASS INDEX, a BMI greater than 30.0 kg/m2 is considered obese, and a BMI greater than 40.0 kg/m2 is considered morbidly obese (MORBID OBESITY).

Obesity Hypoventilation Syndrome - HYPOVENTILATION syndrome in very obese persons with excessive ADIPOSE TISSUE around the ABDOMEN and DIAPHRAGM. It is characterized by diminished to absent ventilatory chemoresponsiveness; chronic HYPOXIA; HYPERCAPNIA; POLYCYTHEMIA; and long periods of sleep during day and night (HYPERSOMNOLENCE). It is a condition often related to OBSTRUCTIVE SLEEP APNEA but can occur separately.

Obesity Management - An integrated professional approach to screening, evaluation, control, and reduction of abnormal WEIGHT GAIN.

Obesity, Abdominal - A condition of having excess fat in the abdomen. Abdominal obesity is typically defined as waist circumferences of 40 inches or more in men and 35 inches or more in women. Abdominal obesity raises the risk of developing disorders, such as DIABETES; HYPERTENSION; and METABOLIC SYNDROME.

Obesity, Maternal - BODY MASS INDEX in PREGNANT WOMEN that is excessively above the recommended cut-off.

Obesity Management - An integrated professional approach to screening, evaluation, control, and reduction of abnormal WEIGHT GAIN.

Obesity, Maternal - BODY MASS INDEX in PREGNANT WOMEN that is excessively above the recommended cut-off.

Obesity, Metabolically Benign - A sub-PHENOTYPE of obese individuals who have a risk for CARDIOVASCULAR DISEASES between that of healthy individuals with normal weight and unhealthy individuals with obesity.

Obesity, Morbid - The condition of weighing two, three, or more times the ideal weight, so called because it is associated with many serious and life-threatening disorders. In the BODY MASS INDEX, morbid obesity is defined as having a BMI greater than 40.0 kg/m2.

Pediatric Obesity - BODY MASS INDEX in children (ages 2-12) and in adolescents (ages 13-18) that is grossly above the recommended cut-off for a specific age and sex. For infants less than 2 years of age, obesity is determined based on standard weight-for-length percentile measures.

Weight Prejudice - Negative attitudes towards and beliefs about others because of their weight. These negative attitudes are manifested by stereotypes and/or prejudice towards people with weight over or under a cultural norm.

Overweight - A status with BODY WEIGHT that is above certain standards. In the scale of BODY MASS INDEX, overweight is defined as having a BMI of 25.0-29.9 kg/m2. Overweight may or may not be due to increases in body fat (ADIPOSE TISSUE), hence overweight does not equal "over fat".

Choroideremia - An X chromosome-linked abnormality characterized by atrophy of the choroid and degeneration of the retinal pigment epithelium causing night blindness.

Weight Gain - Increase in BODY WEIGHT over existing weight.

Body Mass Index - An indicator of body density as determined by the relationship of BODY WEIGHT to BODY HEIGHT. BMI=weight (kg)/height squared (m2). BMI correlates with body fat (ADIPOSE TISSUE). Their relationship varies with age and gender. For adults, BMI falls into these categories: below 18.5 (underweight); 18.5-24.9 (normal); 25.0-29.9 (overweight); 30.0 and above (obese). (National Center for Health Statistics, Centers for Disease Control and Prevention)

Weight Gain - Increase in BODY WEIGHT over existing weight.

Instructional Notations

Code First Code First
Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists, there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation.

obesity complicating pregnancy, childbirth and the puerperium, if applicable O99.21

Use Additional Code Use Additional Code
The “use additional code” indicates that a secondary code could be used to further specify the patient’s condition. This note is not mandatory and is only used if enough information is available to assign an additional code.

code to identify body mass index BMI, if known Z68

Type 1 Excludes Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.

adiposogenital dystrophy E23.6
lipomatosis NOS E88.2
lipomatosis dolorosa [Dercum] E88.2
Prader-Willi syndrome Q87.11

ICD-10 Index

Endocrine, nutritional and metabolic diseases (E00–E90)

Overweight, obesity and other hyperalimentation (E65-E68)

Overweight and obesity (E66)

Clinical Information for Overweight and obesity (E66)

Instructional Notations

Use Additional Code Use Additional CodeThe “use additional code” indicates that a secondary code could be used to further specify the patient’s condition. This note is not mandatory and is only used if enough information is available to assign an additional code.

Use Additional Code Use Additional Code
The “use additional code” indicates that a secondary code could be used to further specify the patient’s condition. This note is not mandatory and is only used if enough information is available to assign an additional code.