IIM ahmedabad do offer PGPX course for executive which is an MBA level one-year full time residential programme for executives with substantial work experience leading to a Post-Graduate Diploma in Management for Executives. The structure of program is as follows:

Programme Structure: This programme follows a six-segment course structure, each segment seamlessly joined to the next. The segments are
(i) Induction
(ii) Building Blocks
(iii) Preparing for Top Management
(iv) International Immersion
(v) Electives
(vi) Capstone

For more informationof this course you can visit the official website of IIMA.