Blue Cross Medicare Advantage Basic (HMO) (H3979-001) in 2027
We are not affiliated with Blue Cross and Blue Shield of Oklahoma. Plan and company names are shown only to identify plans.
HMO: about this plan type · Legal name: GHS HEALTH MAINTENANCE ORGANIZATION, INC.
Being replaced in 6 of 28 counties. Not offered in 22. Check your county below. CMS's 2027 plan list doesn't include this plan.
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- BeingReplaced
- 6
- countiesCMS crosswalk
- Not Offeredin 2027
- 22
- of 28 countiesin 2026
- People inThis Plan
- ~3,100
- CMS enrollment,October 2026
Not offered: CMS's 2027 plan list and plan crosswalk show the plan isn't offered in the county (for drug plans, the state) in 2027 and its members aren't moved to another plan there. Members need to pick a new plan, unless their plan's letter offers another option. If they do nothing, Medicare Advantage and Cost plan members will have Original Medicare. Members of any plan that covered drugs will have no Medicare drug coverage, unless they get Extra Help (outside U.S. territories, Medicare then puts them in a drug plan). Being replaced: members are moved into another plan from the same company. For some plans, CMS's file also lists the plan as ending, so some members may not be moved. The rest need to pick a plan. Their Annual Notice of Change explains the new plan. Everyone in these plans keeps Medicare.
Oklahoma
See the 28 counties in OklahomaHide the counties
Costs and Star Rating
| What | 2026 |
|---|---|
| Monthly premium (without Extra Help) | $0 a month |
| Maximum you pay for covered medical care | $4,200 (in-network) |
| Drug deductible | $450 |
| Overall star rating (from CMS) | 4 out of 5 stars |
CMS rates contracts, so plans under one contract share its rating. For costs with Extra Help, use the lookup.
What Happens Next
Where it is being replaced, CMS's crosswalk moves members into the plan or plans shown in the table. Your Annual Notice of Change explains the new plan.
If this plan is not offered in your county in 2027, you can pick a new plan from October 15 to December 7, 2026. If your plan is ending, you also have until February 28, 2027. That extra time doesn't apply if your plan is being combined into another plan. Check your county to see what happens if you do nothing.
These numbers come from CMS's plan files. If you're in this plan, confirm with your Annual Notice of Change or the letter from your plan.
Source: CMS CY2027 Landscape, data as of October 18, 2026 (release 202610). Enrollment: CMS Monthly Enrollment by Contract/Plan/State/County, October 2026. Plan moves: CMS 2027 Plan Crosswalk, file dated October 1, 2026. People counts add up the counties where this plan is offered. They leave out members who live outside that area. See how we get our numbers.