ICD-10 Diagnosis Code E66.9

Obesity, unspecified

Diagnosis Code E66.9

ICD-10: E66.9
Short Description: Obesity, unspecified
Long Description: Obesity, unspecified
This is the 2019 version of the ICD-10-CM diagnosis code E66.9

Valid for Submission
The code E66.9 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 E66.9 is grouped in the following Diagnostic Related Group(s) (MS-DRG V35.0)

  • 640 - MISCELLANEOUS DISORDERS OF NUTRITION, METABOLISM, FLUIDS AND ELECTROLYTES WITH MCC
  • 641 - MISCELLANEOUS DISORDERS OF NUTRITION, METABOLISM, FLUIDS AND ELECTROLYTES WITHOUT MCC

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

Synonyms
  • Attends obesity monitoring
  • Attends slimming clinic
  • Body mass index 30+ - obesity
  • Choroideremia
  • Choroideremia with deafness and obesity syndrome
  • Difficulty maintaining weight loss
  • Excess subcutaneous fat
  • Finding of body mass index
  • Generalized obesity
  • Has seen dietitian - obesity
  • Impaired glucose tolerance in obese
  • Increase in body fat
  • Increased body mass index
  • Lifelong obesity
  • Lymphedema associated with obesity
  • Mixed conductive AND sensorineural hearing loss
  • MOMO syndrome
  • O/E - obese
  • O/E - overweight
  • O/E - weight
  • Obese
  • Obese build
  • Obese class I
  • Obese class II
  • Obesity
  • Obesity associated disorder
  • Obesity by adipocyte growth pattern
  • Obesity by age of onset
  • Obesity by contributing factors
  • Obesity by fat distribution pattern
  • Obesity in mother complicating childbirth
  • Obesity monitoring check done
  • Obesity monitoring default
  • Obesity monitoring deleted
  • Reason for obesity therapy - occupational
  • Seen by dietitian
  • Sees or has seen dietician
  • Simple obesity
  • Treatment of obesity changed
  • Treatment of obesity started
  • Type 2 diabetes mellitus in obese
  • Understands reducing diet

Index to Diseases and Injuries
References found for the code E66.9 in the Index to Diseases and Injuries:


Tabular List of Diseases and Injuries
References found for the code E66.9 in the Tabular List of Diseases and Injuries:

  • Inclusion Terms:
    • Obesity NOS

Information for Patients


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 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.

Index of Diseases and Injuries Definitions

  • And - The word "and" should be interpreted to mean either "and" or "or" when it appears in a title.
  • Code also note - A "code also" note instructs that two codes may be required to fully describe a condition, but this note does not provide sequencing direction.
  • 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.
  • Type 1 Excludes Notes - 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.
  • Type 2 Excludes Notes - A type 2 Excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
  • Includes Notes - This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
  • Inclusion terms - List of terms is included under some codes. These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
  • NEC "Not elsewhere classifiable" - This abbreviation in the Alphabetic Index represents "other specified". When a specific code is not available for a condition, the Alphabetic Index directs the coder to the "other specified” code in the Tabular List.
  • NOS "Not otherwise specified" - This abbreviation is the equivalent of unspecified.
  • See - The "see" instruction following a main term in the Alphabetic Index indicates that another term should be referenced. It is necessary to go to the main term referenced with the "see" note to locate the correct code.
  • See Also - A "see also" instruction following a main term in the Alphabetic Index instructs that there is another main term that may also be referenced that may provide additional Alphabetic Index entries that may be useful. It is not necessary to follow the "see also" note when the original main term provides the necessary code.
  • 7th Characters - Certain ICD-10-CM categories have applicable 7th characters. The applicable 7th character is required for all codes within the category, or as the notes in the Tabular List instruct. The 7th character must always be the 7th character in the data field. If a code that requires a 7th character is not 6 characters, a placeholder X must be used to fill in the empty characters.
  • With - The word "with" should be interpreted to mean "associated with" or "due to" when it appears in a code title, the Alphabetic Index, or an instructional note in the Tabular List. The word "with" in the Alphabetic Index is sequenced immediately following the main term, not in alphabetical order.

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.

Previous Code
E66.8
Next Code
E67