| January | Austria | LKF | New model takes effect 2027-01-01 | Source |
| January | Belgium | ICD-10-BE | Switch to newer US FY code set (roughly biennial) | Source |
| January | Denmark | DRG takstsystem | New DRG rates and grouping logic take effect 2027-01-01 | Source |
| January (2026 onwards; previously March) | France | T2A MCO tariffs | National tariff arrêté / campaign start 2026 campaign from 1 Jan 2026 | Source |
| January | Germany | OPS / ICD-10-GM / aG-DRG | New versions take effect 2027-01-01 | Source |
| March (for following January) | Germany | Hybrid-DRG | Annual Hybrid-DRG catalogue agreement (GKV-SV, KBV, DKG) 2027 catalogue agreed 31 Mar 2026 | Source |
| January | Ireland | ICD-10-AM/ACHI (Irish) | Edition change (irregular) 12th edition since 1 Jan 2024; 13th edition adoption date not announced | Source |
| January | Ireland | ABF price list | New ABF price list applies | Source |
| January | Italy | ICD-10-IM / CIPI | Mandatory coding of SDO discharges in ICD-10-IM and CIPI 2027-01-01 | Source |
| January | Netherlands | DBC/DOT release | Release takes effect RZ27 from 2027-01-01 | Source |
| January | Norway | ISF / DRG | New ISF rules take effect 2027-01-01 | Source |
| January | Spain | CIE-10-ES | New edition takes effect (roughly biennial) 6th edition in force from 2026; next edition not announced | Source |
| January | Sweden | KVÅ / ICD-10-SE / NordDRG | New versions take effect 2027-01-01 | Source |
| January | Switzerland | CHOP / ICD-10-GM / SwissDRG | New versions take effect 2027-01-01 (SwissDRG 16.0) | Source |
| January | USA | CPT / OPPS / PFS | New calendar-year codes and rates take effect 2027-01-01 | Source |
| December-January | United Kingdom - England | NHS Payment Scheme | Consultation on next year's scheme 2027/28 consultation not yet published (expected winter 2026/27) | Source |
| February | Germany | OPS / ICD-10-GM | Deadline for change proposals for the following year's version | Source |
| February (even years) | Japan | Shinryo hoshu / DPC | Chuikyo report on biennial revision Next: Feb 2028 | Source |
| February, May, September | USA | CPT | CPT Editorial Panel meetings | Source |
| March | Australia | NEP Determination | NEP Determination for next financial year published NEP 2026-27 released 11 Mar 2026; NEP 2027-28 expected March 2027 | Source |
| March / July / November | Australia | MBS | MBS changes (commonly 1 March, 1 July, 1 November) November 2026 update listed on MBS Online | Source |
| March (even years) | Japan | Shinryo hoshu / DPC | Notices (告示/通知) published FY2026: 5 Mar 2026; next March 2028 | Source |
| March-April | Poland | JGP | Annual JGP algorithm description published v1.1.2026 published 22 Apr 2026 | Source |
| March and September | USA | ICD-10-PCS / ICD-10-CM | Coordination and Maintenance Committee meetings (proposals for next FY) | Source |
| March | United Kingdom - England | NHS Payment Scheme / HRG4+ | Final scheme published 2026/27 scheme published March 2026 | Source |
| March (effective 1 April) | United Kingdom - Scotland | ICD-10 / OPCS-4 Scottish standards | Annual consolidations published 2026 editions published 26 Mar 2026 | Source |
| April | Canada | CMG+ / CACS | Directory products, RIW publication; new fiscal year April 2027 (2027-2028 methodology update) | Source |
| June (even years; April before 2024) | Japan | Shinryo hoshu / DPC | Revision takes effect FY2026 revision from 1 Jun 2026; next 2028 | Source |
| April | USA | IPPS / MS-DRG | Proposed rule FY2028 proposed rule expected spring 2027 | Source |
| April | United Kingdom - England | NHS Payment Scheme / OPCS-4 / coding standards | New scheme and coding standards take effect 2027-04-01 (2027/28 scheme) | Source |
| April | United Kingdom - England | OPCS-4 | New OPCS-4 version (roughly 3-yearly) OPCS-4.11 took effect 1 Apr 2026; next version not announced | Source |
| May | Sweden | NordDRG (Swedish) | Decision on next year's logic changes published 2027 decision dated 27 May 2026 | Source |
| June | Switzerland | SwissDRG | SwissDRG AG Board adopts the catalogue version for the following year SwissDRG 16.0 adopted 22 Jun 2026 | Source |
| July | Australia | NEP / AR-DRG / ICD-10-AM | New financial year pricing and classification versions take effect AR-DRG v12.0 from 2026-07-01; next 2027-07-01 | Source |
| July | Switzerland | SwissDRG | Rules and definitions published Published 23 Jul 2026 for 2027 | Source |
| July | Switzerland | CHOP | Next year's CHOP published by BFS CHOP 2026 published 31 Jul 2025 | Source |
| July | USA | OPPS/ASC and PFS | Proposed rules CY2027 proposed rules July 2026 | Source |
| August | Germany | OPS / ICD-10-GM | Preliminary version (Vorabfassung) published OPS 2027 Vorabfassung published 14 Aug 2026 | Source |
| August (around 1 Aug) | USA | IPPS / MS-DRG | Final rule FY2027 final rule issued (CMS-1849-F) | Source |
| September-November | Germany | aG-DRG | Fallpauschalen-Katalog and definitions handbook for next year published by InEK aG-DRG 2027 catalogue not yet on g-drg.de at 6 Nov 2026 | Source |
| September | USA | CPT | Annual CPT code set released CPT 2027 released 9 Sep 2026 | Source |
| October | Canada | ICD-10-CA / CCI | Classification tables for next fiscal year released Next CCI version postponed to FY2027-2028 | Source |
| October | Germany | OPS / ICD-10-GM | Final (binding) version published OPS 2027 official version published 28 Oct 2026 | Source |
| October | Norway | ISF regelverk | Preliminary ISF rules and NPK simulation material for next year Foreløpig ISF-regelverk 2027 updated 19 Oct 2026 | Source |
| October | USA | ICD-10-CM/PCS / IPPS | New fiscal-year codes and MS-DRGs take effect 2026-10-01 (FY2027, MS-DRG v44); next 2027-04-01 if April update, 2027-10-01 | Source |
| Early November | USA | OPPS/ASC and PFS | Final rules CY2027 OPPS/ASC final rule issued (CMS OPPS page updated 5 Nov 2026); CY2027 PFS final rule not yet seen on CMS pages at 6 Nov 2026 | Source |
| December | Italy | ICD-10-IM / CIPI | Final 'Delta' versions of ICD-10-IM and CIPI End of 2026 | Source |
| December | Netherlands | DBC/DOT release | Draft 'a' release for year after next RZ27a published 19 Dec 2025; RZ28a expected Dec 2026 | Source |
| Autumn (Sept-Nov) | Austria | LKF / Leistungskatalog / ICD-10 BMASGPK | Next year's LKF model and catalogues published LKF-Modell 2027 online by 28 Oct 2026 | Source |
| Published late in the preceding year / early in campaign year | France | GHM / fonction groupage | New GHM classification version for the campaign 2027 grouping functions (MCO, HAD, SMR) published by ATIH on 2 Nov 2026 | Source |
| Several per year | Poland | ICD-9-PL | Dictionary version updates 5.90 current (checked 6 Nov 2026) | Source |
| Spring (c. 2-year lag) | Spain | RAE-CMBD Norma Estatal | Weights and costs for reference year published 2024 data updated March 2026 | Source |