2024 ICD-10-CM Diagnosis Code E66.9

Approximate Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

• Attends obesity monitoring
• Attends slimming clinic
• Benign intracranial hypertension
• Body mass index 30+ - obesity
• Central obesity
• Childhood obesity
• Choroideremia
• Choroideremia with deafness and obesity syndrome
• Cognitive impairment, coarse facies, heart defects, obesity, pulmonary involvement, short stature, skeletal dysplasia syndrome
• Colobomatous microphthalmia
• Colobomatous microphthalmia, obesity, hypogenitalism, intellectual disability syndrome
• Congenital mixed conductive and sensorineural hearing loss
• Deafness, encephaloneuropathy, obesity, valvulopathy syndrome
• Difficulty maintaining weight loss
• Excess subcutaneous fat
• Fetal disorder due to maternal obesity
• Fetal disorder due to maternal obesity with adult body mass index 30 or greater but less than 40
• Fetal disorder due to maternal obesity with adult body mass index equal to or greater than 40
• Generalized obesity
• Has seen dietitian - obesity
• Impaired glucose tolerance in obese
• Increased body mass index
• Intellectual disability, obesity, brain malformation, facial dysmorphism syndrome
• Intellectual disability, obesity, prognathism, eye and skin anomalies syndrome
• Intellectual disability, seizures, macrocephaly, obesity syndrome
• Lifelong obesity
• Lower body obesity
• Lymphedema associated with obesity
• Mixed conductive AND sensorineural hearing loss
• MOMO syndrome
• Myelopathy due to obesity
• Neurological disorder due to obesity
• Neurological disorder due to obesity
• Neurological disorder due to obesity
• Neurological disorder due to obesity
• Neurological disorder due to obesity
• Neuropathy due to obesity
• Obese
• Obese build
• Obese class I
• Obese class II
• Obesity
• Obesity associated disorder
• Obesity by adipocyte growth pattern
• Obesity by contributing factors
• Obesity by fat distribution pattern
• Obesity due to leptin receptor gene deficiency
• Obesity in adolescence
• Obesity in mother complicating childbirth
• Obesity monitoring check done
• Obesity monitoring default
• Obesity monitoring deleted
• Peripheral neuropathy due to obesity
• PHIP-related behavioral problems, intellectual disability, obesity, dysmorphic features syndrome
• Pseudoneoplasm cerebri due to obesity
• Reason for obesity therapy - occupational
• Seen by dietitian
• Sees or has seen dietician
• Severe obesity
• Simple obesity
• Skin striae
• Skin striae due to obesity
• Treatment of obesity changed
• Treatment of obesity started
• Type 2 diabetes mellitus in obese
• Understands reducing diet
• X-linked intellectual disability, hypogonadism, ichthyosis, obesity, short stature syndrome
• X-linked sensorineural hearing loss

Clinical Information

• 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 Paradox

  an observation that high body mass index is sometimes associated with lower cardiovascular disease mortality in certain population, e.g., elderly.

• 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, 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.

• 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)

Code Edits

The Medicare Code Editor (MCE) detects and reports errors in the coding of claims data. The following ICD-10-CM Code Edits are applicable to this code:

• Questionable admission codes - Some diagnoses are not usually sufficient justification for admission to an acute care hospital. For example, if a patient is given code R030 for elevated blood pressure reading, without diagnosis of hypertension, then the patient would have a questionable admission, since elevated blood pressure reading is not normally sufficient justification for admission to a hospital. The following list contains diagnosis codes identified as questionable admission when used.

E66.9 is grouped with Diagnostic Related Groups - MS-DRG Mapping

Diagnostic Related Groups (DRGs) are a classification system used to group together diagnosis codes for the purpose of reimbursement and healthcare management. DRGs are used to standardize the way hospitals and other providers are paid for inpatient services. In this system patients are grouped together based on their principal diagnosis in areas referred to as Major Diagnostic Categories (MDC). Once a patient is assigned a particular diagnostic category, providers receive a predetermined payment rate for the services rendered. This reimbursement rate is often fixed and is meant to cover the cost of care for that patient. Reimbursement is also affected by the relative weight of a diagnostic related group based on the severity of a patient's illness and the associated cost of care during hospitalization.

Diagnostic related groups encourage healthcare providers to focus on quality and efficiency in patient care while managing costs effectively. The diagnosis code is present in the following groups for version MS-DRG V41.0 applicable from 10/01/2023 through 09/30/2024.

MS-DRG	MS-DRG Title	MCD	Relative Weight
640	MISCELLANEOUS DISORDERS OF NUTRITION, METABOLISM, FLUIDS AND ELECTROLYTES WITH MCC	10	1.3152
641	MISCELLANEOUS DISORDERS OF NUTRITION, METABOLISM, FLUIDS AND ELECTROLYTES WITHOUT MCC	10	0.7814

The relative weight of a diagnostic related group determines the reimbursement rate based on the severity of a patient's illness and the associated cost of care during hospitalization.

Convert E66.9 to ICD-9-CM

• ICD-9-CM Code: 278.00 - Obesity NOS
  Approximate Flag - The approximate mapping means there is not an exact match between the ICD-10 and ICD-9 codes and the mapped code is not a precise representation of the original code.

Patient Education

Obesity

Obesity means having too much body fat. It is different from being overweight, which means weighing too much. The weight may come from muscle, bone, fat, and/or body water. Both terms mean that a person's weight is greater than what's considered healthy for his or her height.

Obesity happens over time when you eat more calories than you use. The balance between calories-in and calories-out differs for each person. Factors that might affect your weight include your genetic makeup, overeating, eating high-fat foods, and not being physically active.

Obesity increases your risk of diabetes, heart disease, stroke, arthritis, and some cancers. If you have obesity, losing even 5 to 10% of your weight can delay or prevent some of these diseases. For example, that means losing 10 to 20 pounds if you weigh 200 pounds.

NIH: National Institute of Diabetes and Digestive and Kidney Diseases

[Learn More in MedlinePlus]

Code History

• FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
• FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
• FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
• FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
• FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
• FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
• FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
• FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
• FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.