What ICD-10 code is for BMI 40+?

E66.01 (morbid obesity) + Z68.4x (specific BMI).

How to code truncal obesity?

Use E66.01 + R93.89 (abdominal fat localization).

Yes, but payer-specific ( morbid obesity ICD-10 billable codes ).

What are the 4 types of obesity?

Obesity is categorized into four primary types based on cause and distribution: Exogenous obesity : Caused by overeating/sedentary lifestyle (most common). Endogenous obesity : Linked to hormonal/metabolic disorders (e.g., hypothyroidism). Visceral obesity : Fat stored around abdominal organs (high risk for heart disease). Hyperplastic/hypertrophic obesity : Increased fat cell number (hyperplastic) or size (hypertrophic).

What are the 3 stages of obesity?

Based on BMI severity: Class 1 (Mild) : BMI 30.0–34.9. Class 2 (Moderate) : BMI 35.0–39.9. Class 3 (Severe/Morbid) : BMI ≥40.0.

What is considered morbid obesity?

Morbid obesity ( Class 3 ) is defined as: BMI ≥40.0, or BMI ≥35.0 with obesity-related comorbidities (e.g., diabetes, hypertension).

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Morbid Obesity ICD 10 Codes, BMI Rules & Guidelines

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Accurate Morbid Obesity ICD 10 Codes ensure proper medical billing, compliance, and patient care. This guide clarifies codes like E66.9, E66.01, and BMI classifications, with actionable examples for providers and coders.

Morbid obesity issues can be a severe fitness situation that affects hundreds of persons in the quarter. It is more than simply wearing excess weight; it could be a complex medical difficulty that can cause extreme health pains and require cautious manipulation.

Primary ICD-10 Codes for Morbid Obesity

E66.9 – Obesity, Unspecified

Use Case: When BMI is undocumented or not calculated.
Limitations: Avoid if BMI or obesity class is known.

E66.01 – Morbid (Severe) Obesity Due to Excess Calories

Class 3 Obesity: BMI ≥40 (or ≥35 with comorbidities).
Key Terms: Morbid severe obesity ICD-10, super morbid obesity ICD-10.

E66.2 – Morbid Obesity with Alveolar Hypoventilation

Examples: Obesity hypoventilation syndrome (OHS).

E66.3 – Overweight

BMI 25-29.9: Non-morbid obesity ICD-10.

BMI-Specific ICD-10 Codes for Obesity

Code	Description	BMI Range
E66.01	Class 3 (Morbid) Obesity	≥40
Z68.43	BMI 50-59.9 (Super Morbid Obesity)	50.0-59.9
E66.8	Other Obesity (Class 1/2)	30-39.9
Z68.41	BMI 35-39.9 (Class 2)	35.0-39.9
Z68.3	BMI 30-34.9 (Class 1)	30.0-34.9

Special Cases & Comorbidities

Psychological Factors (F55.8)

Use with E66.01 for psychological factors affecting morbid obesity ICD-10.

Maternal Morbid Obesity (O99.214)

For pregnancy-related coding.

Immunodeficiency Due to Obesity (D84.81)

Immunodeficiency due to morbid obesity ICD-10.

History of Morbid Obesity (Z86.39)

For resolved cases impacting current care.

ICD-10 Coding Guidelines for Morbid Obesity

Document BMI: Always link codes like E66.01 to a BMI ≥40 (e.g., Z68.45 for BMI 50+).
Avoid Unspecified Codes: Use E66.9 only when BMI/class is unknown.
Comorbidities First: List conditions like hypertension (I10) before obesity codes.
2025 Updates: Confirm code revisions annually (e.g., morbid obesity ICD-10 2025).

Common Coding Mistakes to Avoid

Mixing Classes: Class 3 (E66.01) ≠ Class 2 (Z68.41).
Ignoring BMI: Unspecified codes (E66.9) risk claim denials.
Overlooking Comorbidities: Code OHS (E66.2) or psychological factors (F55.8) separately.

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Conclusion

ICD-10 code E66.01 for morbid weight problems is a critical tool for healthcare providers to diagnose and manage this extreme circumstance. By knowing what morbid weight problems are, the applicable ICD-10 codes, BMI prognosis codes, and the complications related to weight problems, carriers can make sure that sufferers acquire first-class feasible care.

Proper coding and documentation are also crucial for correct repayment, making it vital for carriers to stay knowledgeable about state-of-the-art coding recommendations and payer rules.

FAQs - Morbid Obesity ICD-10 Codes

1. What ICD-10 code is for BMI 40+?
E66.01 (morbid obesity) + Z68.4x (specific BMI).
2. How to code truncal obesity?
Use E66.01 + R93.89 (abdominal fat localization).
3. Is E66.9 billable?
Yes, but payer-specific (morbid obesity ICD-10 billable codes).
4. What are the 4 types of obesity?
Obesity is categorized into four primary types based on cause and distribution:
- Exogenous obesity: Caused by overeating/sedentary lifestyle (most common).
- Endogenous obesity: Linked to hormonal/metabolic disorders (e.g., hypothyroidism).
- Visceral obesity: Fat stored around abdominal organs (high risk for heart disease).
- Hyperplastic/hypertrophic obesity: Increased fat cell number (hyperplastic) or size (hypertrophic).
5. What are the 3 stages of obesity?
Based on BMI severity:
- Class 1 (Mild): BMI 30.0–34.9.
- Class 2 (Moderate): BMI 35.0–39.9.
- Class 3 (Severe/Morbid): BMI ≥40.0.
6. What is considered morbid obesity?
Morbid obesity (Class 3) is defined as:
- BMI ≥40.0, or
- BMI ≥35.0 with obesity-related comorbidities (e.g., diabetes, hypertension).

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