CMS Retired NCD 50 for Intestinal Bypass Surgery — What Billing Teams Need to Know in 2026
TL;DR: The Centers for Medicare & Medicaid Services modified NCD 50 (Intestinal Bypass Surgery) on January 9, 2026, confirming its retired status and consolidation into NCD 100.1. This policy lists no active CPT or HCPCS codes.
NCD 50 in the CMS Medicare coverage policy system is officially retired. Section 100.8 — the intestinal bypass surgery provision — was removed from the NCD Manual back in September 2013 and folded into NCD 100.1. The January 9, 2026 update is an administrative confirmation, not a coverage change. But if your billing team is still routing intestinal bypass surgery claims under the wrong policy reference, this is the reminder to fix that.
Quick-Reference Table
| Field | Detail |
|---|---|
| Payer | CMS (Centers for Medicare & Medicaid Services) |
| Policy | Intestinal Bypass Surgery — RETIRED |
| Policy Code | NCD 50 |
| Change Type | Modified (administrative retirement confirmation) |
| Effective Date | 2026-01-09 |
| Impact Level | Low — for teams already billing under NCD 100.1; Medium — for any team still referencing NCD 50 |
| Specialties Affected | General Surgery, Bariatric Surgery, Inpatient Hospital Billing |
| Key Action | Confirm all intestinal bypass surgery claims reference NCD 100.1, not NCD 50 |
CMS Intestinal Bypass Surgery Coverage Criteria and Medical Necessity Requirements 2026
Here's the core issue with this policy: NCD 50 no longer contains any active coverage criteria. Section 100.8 was pulled from the NCD Manual effective September 24, 2013 — over a decade ago.
Active coverage policy for intestinal bypass surgery now lives entirely under NCD 100.1. That's where CMS establishes medical necessity standards for bariatric procedures covered under Medicare. If your team is researching whether intestinal bypass surgery is covered under Medicare, NCD 100.1 is the document you need.
The CMS intestinal bypass surgery coverage policy under NCD 50 is a shell. It exists only as a cross-reference pointing to NCD 100.1 (and also to NCD 40.5). There are no active medical necessity criteria, no prior authorization requirements, and no reimbursement guidance in NCD 50 itself.
For actual medical necessity criteria — including documentation requirements, patient eligibility thresholds, and prior authorization considerations — pull NCD 100.1 directly from the Medicare Coverage Database. That's where the substantive billing guidelines live.
Coverage Indications at a Glance
| Indication | Status | Relevant Codes | Notes |
|---|---|---|---|
| Intestinal bypass surgery (NCD 50) | Retired — No Active Coverage Determination | None listed in NCD 50 | All coverage criteria moved to NCD 100.1 effective September 24, 2013 |
| Intestinal bypass surgery (NCD 100.1) | See NCD 100.1 | See NCD 100.1 | Active coverage policy — reference NCD 100.1 for current criteria |
| See also NCD 40.5 | See NCD 40.5 | See NCD 40.5 | CMS cross-reference per the NCD Manual |
NCD 50 contains no active indication-level criteria. Every row that would have appeared here was transferred to NCD 100.1 in 2013.
CMS Intestinal Bypass Surgery Billing Guidelines and Action Items 2026
The January 9, 2026 update changes nothing clinically. But it's a useful forcing function to audit how your team handles intestinal bypass surgery billing. Here's what to do.
| # | Action Item |
|---|---|
| 1 | Audit your internal policy references before January 31, 2026. If any internal documentation, charge capture workflows, or payer policy trackers still reference NCD 50 as an active coverage policy, update them now. The effective date of the 2026 update is January 9, 2026 — this should already be resolved, but verify it is. |
| 2 | Point all intestinal bypass surgery claims to NCD 100.1. That's the active NCD. If a claim denial comes back citing a policy discrepancy, routing under the wrong NCD reference won't help your appeal. |
| 3 | Pull NCD 100.1 and review its current medical necessity criteria. CMS intestinal bypass surgery reimbursement under Medicare requires meeting specific clinical thresholds. Those thresholds live in NCD 100.1 — not here. Make sure your clinical documentation supports what NCD 100.1 requires. |
| 4 | Check NCD 40.5 as well. The NCD Manual cross-references both 40.5 and 100.1. Depending on your patient's clinical scenario, 40.5 may be relevant. Confirm with your billing consultant or compliance officer which cross-reference applies to your specific claim type. |
| 5 | Review any open or pending appeals that reference NCD 50. If you have a claim denial currently in appeal and your appeal documentation cites NCD 50 as the governing policy, revise that documentation to reference NCD 100.1. Citing a retired policy in an active appeal weakens your position. |
| 6 | Update your payer policy tracker. Mark NCD 50 as retired and link it to NCD 100.1 in your internal tracking system. If your team gets an alert on NCD 50 in the future, the context should be immediately clear — retired, see 100.1. |
If your practice has high volume in bariatric surgery and you're unsure whether your current billing workflows correctly reflect NCD 100.1's requirements, talk to your compliance officer before submitting additional claims.
| Previous Version | Current Version |
|---|---|
| Coverage is considered experimental and investigational for all indications | Coverage is considered medically necessary when specific criteria are met |
| Prior authorization is not required | Prior authorization is required for initial treatment |
| Documentation must include clinical history | Documentation must include clinical history |
| Re-review every 24 months | Re-review every 12 months with updated clinical documentation |
CPT, HCPCS, and ICD-10 Codes for Intestinal Bypass Surgery Under NCD 50
Covered CPT Codes (When Selection Criteria Are Met)
NCD 50 lists no CPT or HCPCS codes. The policy is retired and contains no active code-level guidance.
For CPT codes applicable to intestinal bypass surgery under Medicare, reference NCD 100.1 directly.
Key ICD-10-CM Diagnosis Codes
NCD 50 lists no ICD-10-CM codes. All diagnosis code guidance for intestinal bypass surgery billing under Medicare is governed by NCD 100.1.
A note on the January 9, 2026 revision history: CMS issued this update under revision 11892 (issued March 9, 2023; effective April 10, 2023; implementation April 10, 2023). The January 9, 2026 policy key update (50-v3) reflects administrative maintenance in the CMS policy database. No new clinical or coverage criteria were added. This is not a signal that intestinal bypass surgery coverage policy is under active review.
The real question for intestinal bypass surgery billing isn't what changed in NCD 50 — it's whether your team has fully transitioned to NCD 100.1 as the governing policy. If that transition happened cleanly in 2013 or shortly after, you're in good shape. If your team is newer or inherited workflows from a period before the consolidation, audit your processes now.
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