Reviewed by Russell Noga, Licensed Medicare Insurance Broker (all 50 states) — Last updated October 27, 2026
The 2027 High-Deductible Plan G deductible is $3,050, up from $2,950 in 2026, according to CMS. You pay Medicare-covered costs up to that amount each year, then the plan pays like regular Plan G for the rest of the year.
High-Deductible Plan G (HDG) has the same benefits as regular Plan G, the most complete Medigap plan open to people new to Medicare. The difference is when coverage starts. In exchange for carrying the deductible, HDG premiums are usually far lower than Plan G premiums, which can make it the lowest-cost way to get full Medigap protection in a healthy year.
This guide explains how the 2027 deductible works, what counts toward it, how to compare HDG with regular Plan G, and who it fits. See High-Deductible Plan G and Medicare Supplement plans 2027.
2027 update (October 27, 2026)
Annual Enrollment is open now through December 7, 2026, with new coverage starting January 1, 2027. About 3.2 million people in individual Medicare Advantage plans (about 11%) must pick a new plan for 2027 because theirs is being discontinued.
If your Medicare Advantage plan is ending, you generally have a guaranteed issue right to buy certain Medigap plans, including Plan G, without health questions. The right lasts until 63 days after your Medicare Advantage coverage ends, so apply before your plan ends to avoid a gap.
Your Part B deductible counts toward the $3,050 High-Deductible Plan G deductible. CMS has not yet announced the 2027 Part B deductible; it normally does in November, and the 2026 Medicare Trustees Report projects about $292, up from $283 in 2026. The projected 2027 Part B premium is about $209.50 a month, up from $202.90.
High-Deductible Plan F has the same $3,050 deductible for 2027, but Plan F and Plan C remain available only to people who were eligible for Medicare before January 1, 2020.
✔ Based on CMS 2027 data
✔ Free plan comparison


