Wiki HCC Documentation for Morbid Obesity

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Code: E66.01

Code Name: ICD-10 Code for Morbid (severe) obesity due to excess calories

Block: Overweight, obesity and other hyperalimentation (E65-E68)

Details: Morbid (severe) obesity due to excess calories

Excludes 1: morbid (severe) obesity with alveolar hypoventilation (E66.2)

Code first obesity complicating pregnancy, childbirth and the puerperium, if applicable (O99.21-)
Use additional code to identify body mass index (BMI), if known (Z68.-)

Excludes1: adiposogenital dystrophy (E23.6)
lipomatosis NOS (E88.2)
lipomatosis dolorosa [Dercum] (E88.2)
Prader-Willi syndrome (Q87.1)

Guidelines: Endocrine, nutritional and metabolic diseases (E00-E89)

Excludes 1: transitory endocrine and metabolic disorders specific to newborn (P70-P74)

Note: All neoplasms, whether functionally active or not, are classified in Chapter 2. Appropriate codes in this chapter (i.e. E05.8, E07.0, E16-E31, E34.-) may be used as additional codes to indicate either functional activity by neoplasms and ectopic endocrine tissue or hyperfunction and hypofunction of endocrine glands associated with neoplasms and other conditions classified elsewhere.

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Loma Linda
Best answers
I need some help finding documentation that will show the HCC CMS guidelines for coding Morbid Obesity and the BMI association. I can only find where >40 BMI is considered Morbidly obese but I am being told by many providers that if the pt is >30 WITH comorbidities they are considered morbidly obese... Now my question for Risk Adjustment is must they link the co morbidities to obesity as a cause and effect? like we do for DM? I really hope someone has the key for this. Everything I look up talks about ICD9

Thanks in advance

Debi Bales LVN,CPC,CRC


Reno, Nevada
Best answers
Severe Obesity and high blood pressure

If a medical record indicates patient has severe obesity and also high blood pressure, as a coder can I report E66.01 for morbid obesity? The high blood pressure is considered a co-morbidity to severe obesity which then "bumps up" the diagnosis from severe to morbid. Any advice is appreciated. Thank you.