E66.8

Other obesity

Not billable — category only FY2026 2025-10-01 → 2026-09-30

Exclusions 5 never code together

E66code

Excludes2

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

E00-E89chapter

Excludes1

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

Excludes1 — never code together. The excluded condition and this one are mutually exclusive.

Excludes2 — not included here, but the patient may have both. Code both when documented.

Instructional notes 3

E66code

Code first

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

Use additional code

code to identify body mass index (BMI), if known, for adults (Z68.1-Z68.45) or pediatrics (Z68.5-)Z68.1-Z68.45 Z68.5-

E00-E89chapter

Notes

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.E05.8 E07.0 E16-E31 E34.-

Index entries leading here filed at null

No alphabetic index entry points at this code.

Alongside this code 5 same parent — E66

E66.0 Obesity due to excess calories category E66.1 Drug-induced obesity E66.2 Morbid (severe) obesity with alveolar hypoventilation E66.3 Overweight E66.9 Obesity, unspecified

Subordinate codes 2

E66.81 Obesity class E66.89 Other obesity not elsewhere classified

Medications 1

47 Obesity drugs

MED-RT files conditions by MeSH, which carves the world differently from ICD-10. These are name matches on this code's description, offered as candidates — not as an assertion that they are this code.

Additional references

AHA Coding Clinic® Licence required

Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.

Risk adjustment

Maps to no condition category in any loaded model.

Presence is a property of the code. Untick a model to hide it everywhere.

This code

Billable: no
Code set: FY2026
Parent: E66
Block: E65-E68
Siblings: 5
Subordinate: 2

Present FY2024–FY2027.