Key facts for NCD 100.1
- Benefit category
- Incident to a physician's professional Service, Inpatient Hospital Services, Physicians' Services
- Effective date
- 09/24/2013
- Implemented 12/17/2013
- Transmittal
- Transmittal 158
- Versions published
- 5
- Manual chapter
- 100
- NCD Manual (Pub. 100-03)
TL;DR
NCD 100.1 sets Medicare's national policy for bariatric surgery for treatment of co-morbid conditions related to morbid obesity under the benefit category "Incident to a physician's professional Service, Inpatient Hospital Services, Physicians' Services", effective 09/24/2013 and implemented 12/17/2013. Effective for services performed on and after February 21, 2006, Open and laparoscopic Roux-en-Y gastric bypass (RYGBP), open and laparoscopic Biliopancreatic Diversion with Duodenal Switch (BPD/DS) or Gastric Reduction Duodenal Switch (BPD/GRDS), and… It has been revised 4 times since publication and binds every Medicare Administrative Contractor nationally.
Item or service described
Please note, sections 40.5, 100.8, 100.11, and 100.14 have been removed from the National Coverage Determination (NCD) Manual and incorporated into NCD 100.1
A. General
Obesity may be caused by medical conditions such as hypothyroidism, Cushing's disease, and hypothalamic lesions, or can aggravate a number of cardiac and respiratory diseases as well as diabetes and hypertension. Non-surgical services in connection with the treatment of obesity are covered when such services are an integral and necessary part of a course of treatment for one of these medical conditions.
In addition, supplemented fasting is a type of very low calorie weight reduction regimen used to achieve rapid weight loss. The reduced calorie intake is supplemented by a mixture of protein, carbohydrates, vitamins, and minerals. Serious questions exist about the safety of prolonged adherence for 2 months or more to a very low calorie weight reduction regimen as a general treatment for obesity, because of instances of cardiopathology and sudden death, as well as possible loss of body protein.
Bariatric surgery procedures are performed to treat comorbid conditions associated with morbid obesity. Two types of surgical procedures are employed. Malabsorptive procedures divert food from the stomach to a lower part of the digestive tract where the normal mixing of digestive fluids and absorption of nutrients cannot occur. Restrictive procedures restrict the size of the stomach and decrease intake. Surgery can combine both types of procedures.
The following are descriptions of bariatric surgery procedures:
1. Roux-en-Y Gastric Bypass (RYGBP)
The RYGBP achieves weight loss by gastric restriction and malabsorption. Reduction of the stomach to a small gastric pouch (30 cc) results in feelings of satiety following even small meals. This small pouch is connected to a segment of the jejunum, bypassing the duodenum and very proximal small intestine, thereby reducing absorption. RYGBP procedures can be open or laparoscopic.
2. Biliopancreatic Diversion with Duodenal Switch (BPD/DS) or Gastric Reduction Duodenal Switch (BPD/GRDS)
The BPD achieves weight loss by gastric restriction and malabsorption. The stomach is partially resected, but the remaining capacity is generous compared to that achieved with RYGBP. As such, patients eat relatively normal-sized meals and do not need to restrict intake radically, since the most proximal areas of the small intestine (i.e., the duodenum and jejunum) are bypassed, and substantial malabsorption occurs. The partial BPD/DS or BPD/GRDS is a variant of the BPD procedure. It involves resection of the greater curvature of the stomach, preservation of the pyloric sphincter, and transection of the duodenum above the ampulla of Vater with a duodeno-ileal anastomosis and a lower ileo-ileal anastomosis. BPD/DS or BPD/GRDS procedures can be open or laparoscopic.
3. Adjustable Gastric Banding (AGB)
The AGB achieves weight loss by gastric restriction only. A band creating a gastric pouch with a capacity of approximately 15 to 30 cc's encircles the uppermost portion of the stomach. The band is an inflatable doughnut-shaped balloon, the diameter of which can be adjusted in the clinic by adding or removing saline via a port that is positioned beneath the skin. The bands are adjustable, allowing the size of the gastric outlet to be modified as needed, depending on the rate of a patient's weight loss. AGB procedures are laparoscopic only.
Indications and limitations of coverage
B. Nationally Covered Indications
Effective for services performed on and after February 21, 2006, Open and laparoscopic Roux-en-Y gastric bypass (RYGBP), open and laparoscopic Biliopancreatic Diversion with Duodenal Switch (BPD/DS) or Gastric Reduction Duodenal Switch (BPD/GRDS), and laparoscopic adjustable gastric banding (LAGB) are covered for Medicare beneficiaries who have a body-mass index ≥ 35, have at least one co-morbidity related to obesity, and have been previously unsuccessful with medical treatment for obesity.
Effective for dates of service on and after February 21, 2006, these procedures are only covered when performed at facilities that are: (1) certified by the American College of Surgeons as a Level 1 Bariatric Surgery Center (program standards and requirements in effect on February 15, 2006); or (2) certified by the American Society for Bariatric Surgery as a Bariatric Surgery Center of Excellence (program standards and requirements in effect on February 15, 2006). Effective for dates of service on and after September 24, 2013, facilities are no longer required to be certified.
Effective for services performed on and after February 12, 2009, the Centers for Medicare & Medicaid Services (CMS) determines that Type 2 diabetes mellitus is a co-morbidity for purposes of this NCD.
A list of approved facilities and their approval dates are listed and maintained on the CMS Coverage Web site at http://www.cms.gov/Medicare/Medicare-General-Information/MedicareApprovedFacilitie/Bariatric-Surgery.html, and published in the Federal Register for services provided up to and including date of service September 23, 2013.
C. Nationally Non-Covered Indications
Treatments for obesity alone remain non-covered.
Supplemented fasting is not covered under the Medicare program as a general treatment for obesity (see section D. below for discretionary local coverage).
The following bariatric surgery procedures are non-covered for all Medicare beneficiaries:
Open adjustable gastric banding;
Open sleeve gastrectomy;
Laparoscopic sleeve gastrectomy (prior to June 27, 2012);
Open and laparoscopic vertical banded gastroplasty;
Intestinal bypass surgery; and,
Gastric balloon for treatment of obesity.
D. Other
Effective for services performed on and after June 27, 2012, Medicare Administrative Contractors (MACs) acting within their respective jurisdictions may determine coverage of stand-alone laparoscopic sleeve gastrectomy (LSG) for the treatment of co-morbid conditions related to obesity in Medicare beneficiaries only when all of the following conditions a.-c. are satisfied.
• The beneficiary has a body-mass index (BMI) ≥ 35 kg/m 2 ,
• The beneficiary has at least one co-morbidity related to obesity, and,
• The beneficiary has been previously unsuccessful with medical treatment for obesity.
The determination of coverage for any bariatric surgery procedures that are not specifically identified in an NCD as covered or non-covered, for Medicare beneficiaries who have a body-mass index ≥ 35, have at least one co-morbidity related to obesity, and have been previously unsuccessful with medical treatment for obesity, is left to the local MACs.
Where weight loss is necessary before surgery in order to ameliorate the complications posed by obesity when it coexists with pathological conditions such as cardiac and respiratory diseases, diabetes, or hypertension (and other more conservative techniques to achieve this end are not regarded as appropriate), supplemented fasting with adequate monitoring of the patient is eligible for coverage on a case-by-case basis or pursuant to a local coverage determination. The risks associated with the achievement of rapid weight loss must be carefully balanced against the risk posed by the condition requiring surgical treatment.
Text reproduced from the CMS Medicare Coverage Database record for NCD 100.1 version 5. View the original on cms.gov.
Revision history
03/2025 - The purpose of this Change Request (CR) is to provide a quarterly maintenance update of ICD-10 coding conversions and other coding updates specific to National Coverage Determinations (NCDs). No policy is being changed as a result of these updates. ( TN 13097 ) (CR13939)
05/2024 - The purpose of this Change Request (CR) is to provide a quarterly maintenance update of ICD-10 coding conversions and other coding updates specific to National Coverage Determinations (NCDs). No policy is being changed as a result of these updates. ( TN 12626 ) (CR13596)
05/2017 - This change request (CR) constitutes a maintenance update of ICD-10 conversions and other coding updates specific to national coverage determinations (NCDs). These NCD coding changes are the result of newly available codes, coding revisions to NCDs released separately, or coding feedback received.
Previous NCD coding changes appear in ICD-10 quarterly updates that can be found at: https://www.cms.gov/Medicare/Coverage/CoverageGenInfo/ICD10.html , along with other CRs implementing new policy NCDs. Edits to ICD-10 and other coding updates specific to NCDs will be included in subsequent, quarterly releases and individual CRs as appropriate. No policy-related changes are included with the ICD-10 quarterly updates. Any policy-related changes to NCDs continue to be implemented via the current, long-standing NCD process. ( TN 1854 ) (CR10086)
02/2017 - This change request (CR) is the 10th maintenance update of ICD-10 conversions and other coding updates specific to national coverage determinations (NCDs). These NCD coding changes are the result of newly available codes, coding revisions to NCDs released separately, or coding feedback received.
Previous NCD coding changes appear in ICD-10 quarterly updates as follows: CR7818, CR8109, CR8197, CR8691, CR9087, CR9252, CR9540, CR9631, and CR9751, as well as in CRs implementing new policy NCDs. Edits to ICD-10 and other coding updates specific to NCDs will be included in subsequent, quarterly releases and individual CRs as appropriate. No policy-related changes are included with the ICD-10 quarterly updates. Any policy-related changes to NCDs continue to be implemented via the current, long-standing NCD process. ( TN 1792 ) (CR9861)
12/2015 - This change request (CR) is the 3rd maintenance update of ICD-10 conversions/updates specific to national coverage determinations (NCDs). The majority of the NCDs included are a result of feedback received from previous ICD-10 NCD CR7818, CR8109, CR8197, CR8691, & CR9087. Some are the result of revisions required to other NCD-related CRs released separately that included ICD-10 coding. Implementation date: 01/04/2016 Effective date: 10/1/2015. ( TN 1580 ) (CR9252)
08/2015 - This change request (CR) is the 3rd maintenance update of ICD-10 conversions/updates specific to national coverage determinations (NCDs). The majority of the NCDs included are a result of feedback received from previous ICD-10 NCD CR7818, CR8109, CR8197, CR8691, & CR9087. Some are the result of revisions required to other NCD-related CRs released separately that included ICD-10 coding.
These updates do not expand, restrict, or alter existing coverage policy. Implementation date: 01/04/2016 Effective date: 10/1/2015. ( TN 1537 ) (CR 9252)
05/2014 - CMS translated the information for this policy from ICD-9-CM/PCS to ICD-10-CM/PCS according to HIPAA standard medical data code set requirements and updated any necessary and related coding infrastructure. These updates do not expand, restrict, or alter existing coverage policy. Implementation date: 10/06/2014 Effective date: 10/1/2015. ( TN 1388 ) ( TN 1388 ) (CR 8691)
12/2013 - Transmittal 157, dated November 15, 2013, is being rescinded and replaced by Transmittal 158, dated December 23, 2013 to add omitted ICD codes in section 150.5.1, Pub. 100-04 Claims Processing Manual, and to make technical corrections in sections 40.5, 100.8, 100.11 & 100.14, Pub. 100-03 NCD Manual. All other information remains the same. (TN 158) (CR8484)
11/2013 - Effective for dates of service on and after September 24, 2013, facility certification shall no longer be required for coverage of covered bariatric surgery procedures. (TN 157) (CR8484).
01/2013 - Transmittal 148, dated November 9, 2012 is rescinded and replaced by Transmittal 150, dated January 29, 2013. The Business Requirement 8028.1 has been updated to include the correct responsibility FI that was previously omitted. All other information remains the same. (TN 150) (CR8028).
11/2012 - Effective for claims with dates of service on or after June 27, 2012, Medicare Administrative Contractors acting within their respective jurisdictions may determine coverage of stand-alone laparoscopic sleeve gastrectomy (LSG) for the treatment of co-morbid conditions related to obesity in Medicare beneficiaries only when all of the following conditions a-c are satisfied.
• The beneficiary has a body-mass index (BMI) ≥ 35 kg/m2,
• The beneficiary has at least one co-morbidity related to obesity, and,
• The beneficiary has been previously unsuccessful with medical treatment for obesity. Effective date: 06/27/2012 Implementation date: 12/10/2012. (TN 148) (CR8028).
04/2009 - Effective for services performed on and after February 12, 2009, CMS determines that open and laparoscopic Roux-en-Y gastric bypass (RYGBP), laparoscopic adjustable gastric banding (LAGB), and open and laparoscopic biliopancreatic diversion with duodenal switch (BPD/DS) in Medicare beneficiaries who have type 2 diabetes mellitus (T2DM) and a BMI less than 35 are not reasonable and necessary under section 1862(a)(1)(A) of the Social Security Act, and therefore are not covered. Effective date: 02/12/2009 Implementation date: 05/18/2009 (TN 100) (CR6419).
04/2006 - Medicare will cover open and laparoscopic Roux-en Y gastric bypass (RYGBP), laparoscopic adjustable gastric banding (LAGB) and open and laparoscopic biliopancreatic diversion with duodenal switch (BPD/DS) if certain criteria are met and the procedure is performed in an approved facility. Effective date: 02/21/2006 (TN 54) (CR5013).
Implementation Dates:
How this NCD shows up on remittances
A service denied under a National Coverage Determination returns CARC 50 (not deemed medically necessary) with remark N386 (decision based on an NCD); a denial citing a local policy instead carries N115. Because NCDs bind nationally, the appeal path is documentation that the patient meets the indications above, not a contractor-policy argument.
How QuickIntell applies NCD 100.1
QuickAuth checks the ordered service and diagnosis against NCD and LCD criteria before the encounter, QuickCode validates the diagnosis pairing on the claim, and QuickRCM routes CARC 50 denials with the policy text and the covered-code list attached so the appeal starts with evidence.
Frequently asked questions — NCD 100.1
What does NCD 100.1 cover?
Effective for services performed on and after February 21, 2006, Open and laparoscopic Roux-en-Y gastric bypass (RYGBP), open and laparoscopic Biliopancreatic Diversion with Duodenal Switch (BPD/DS) or Gastric Reduction Duodenal Switch (BPD/GRDS), and laparoscopic adjustable gastric banding (LAGB) are covered for Medicare beneficiaries who have a body-mass index ≥ 35, have at least one co-morbidity related to… The full indications and limitations are reproduced on this page from the CMS Medicare Coverage Database.
When did NCD 100.1 take effect?
The current version (5) is effective 09/24/2013, implemented 12/17/2013, published in transmittal 158. CMS lists 5 versions of this NCD.
Does a Local Coverage Determination override NCD 100.1?
No. A National Coverage Determination binds all Medicare Administrative Contractors; an LCD can only address services or circumstances the NCD leaves open. Claims denied under this NCD typically return CARC 50 with remark N386 (NCD) rather than N115 (LCD).
Sources
Every figure on this page is taken from the CMS publications below, as released by the Centers for Medicare & Medicaid Services. Projection built 2026-10-02. Verify against the primary file before billing or contracting decisions.
- Medicare Coverage Database NCDs via the CMS Coverage APIVersion API snapshot 2026-09-27 · effective 2026-09-20 · file national-coverage-ncd.jsonSHA-256 a90fadfd264b9ef4…
Disclaimer
This page reproduces the CMS National Coverage Determination text and, for laboratory NCDs, the CMS ICD-10 edit lists, as an operational reference. Coverage decisions depend on the full policy, the claim and the contractor; nothing here is legal, clinical or billing advice. CPT codes are shown as numbers only; CPT descriptors are copyright AMA.