ICD-10 Diagnosis Code E66.8

Other obesity

Diagnosis Code E66.8

ICD-10: E66.8
Short Description: Other obesity
Long Description: Other obesity
This is the 2019 version of the ICD-10-CM diagnosis code E66.8

Valid for Submission
The code E66.8 is valid for submission for HIPAA-covered transactions.

Code Classification
  • Endocrine, nutritional and metabolic diseases (E00–E90)
    • Overweight, obesity and other hyperalimentation (E65-E68)
      • Overweight and obesity (E66)

Version 2019 Billable Code Questionable Admission Codes

Information for Medical Professionals

Code Edits
The following 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.

Diagnostic Related Groups
The diagnosis code E66.8 is grouped in the following Diagnostic Related Group(s) (MS-DRG V35.0)


Convert to ICD-9
  • 278.00 - Obesity NOS (Approximate Flag)

  • Adult-onset obesity
  • Android obesity
  • Aniridia, ptosis, intellectual disability, familial obesity syndrome
  • Buffalo obesity
  • Central obesity
  • Central obesity
  • Childhood obesity
  • Congenital aniridia
  • Congenital hypoplasia of penis
  • Constitutional obesity
  • Endogenous obesity
  • Familial obesity
  • Gynecoid obesity
  • Hydrocephalus with obesity and hypogonadism syndrome
  • Hyperinsulinar obesity
  • Hyperplastic obesity
  • Hyperplastic-hypertrophic obesity
  • Hypertrophic obesity
  • Hypogonadal obesity
  • Hypothalamic disorder of appetite
  • Hypothalamic obesity
  • MEHMO syndrome
  • MORM syndrome
  • Obesity by adipocyte growth pattern
  • Obesity by adipocyte growth pattern
  • Obesity by adipocyte growth pattern
  • Obesity by age of onset
  • Obesity by age of onset
  • Obesity caused by energy imbalance
  • Obesity due to melanocortin 4 receptor deficiency
  • Obesity due to prohormone convertase I deficiency
  • Obesity of endocrine origin
  • Obesity, colitis, hypothyroidism, cardiac hypertrophy, developmental delay syndrome
  • Peripheral obesity
  • Pulmonary hypertension associated with chronic underventilation
  • Pulmonary hypertension due to lung disease and/or hypoxia
  • Pulmonary hypertension with extreme obesity
  • X-linked intellectual disability with precocious puberty and obesity syndrome

Index to Diseases and Injuries
References found for the code E66.8 in the Index to Diseases and Injuries:

Information for Patients


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 percent 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

  • Body mass index (Medical Encyclopedia)
  • Health risks of obesity (Medical Encyclopedia)
  • Obesity (Medical Encyclopedia)
  • Obesity hypoventilation syndrome (OHS) (Medical Encyclopedia)

[Read More]

ICD-10 Footnotes

General Equivalence Map Definitions
The ICD-10 and ICD-9 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.

  • Approximate Flag - The approximate flag is on, indicating that the relationship between the code in the source system and the code in the target system is an approximate equivalent.
  • No Map Flag - The no map flag indicates that a code in the source system is not linked to any code in the target system.
  • Combination Flag - The combination flag indicates that more than one code in the target system is required to satisfy the full equivalent meaning of a code in the source system.

Present on Admission
The Present on Admission (POA) indicator is used for diagnosis codes included in claims involving inpatient admissions to general acute care hospitals. POA indicators must be reported to CMS on each claim to facilitate the grouping of diagnoses codes into the proper Diagnostic Related Groups (DRG). CMS publishes a listing of specific diagnosis codes that are exempt from the POA reporting requirement.

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