A sports classification is not a simple clinical label and does not measure the severity of a disability in the abstract: Paralympic classification is used to determine how much an impairment affects the technical actions required by a specific sport. At the Paralympic Winter Games in Milano Cortina 2026, this principle was applied through different systems depending on the discipline — from the B (Blind) and LW (Locomotor Winter) codes in skiing to the SB (Snowboard) classes in snowboarding and on to sports that focus mainly on eligibility rather than multiple competitive categories. (B codes — indicate degrees of visual impairment; LW codes — describe different functional profiles for standing and sitting skiers; SB classes — cover lower‑ and upper‑limb impairment categories in snowboarding.)

Paralympic classification is not the same as a medical diagnosis. For the Paralympic movement, an athlete must first have an underlying condition that causes a permanent, eligible impairment; next, it must be verified whether that impairment meets the minimum criteria for the sport; finally, a sport class is assigned — a classification built around how the impairment affects performance in that discipline. In other words, the same person can be evaluated differently from sport to sport because the movements, equipment, and functional demands vary.

This is the central point and the most misunderstood aspect in public coverage of the Paralympics. Classification is not designed to “photograph” disability but to make competition as fair as possible. The goal is to reduce the effect of the impairment on the outcome so that training, technique, tactics, and mental preparation make the difference. It is the logic that guided Milano Cortina 2026, where athletes competed in six sports: Para alpine skiing, Para biathlon, Para cross-country skiing, Para ice hockey, Para snowboard, and wheelchair curling.

Categories, Classes, and Factors

In Para alpine skiing, athletes are organized into three broad categories: sitting, standing, and vision-impaired. The sitting category includes skiers who race in a sit-ski. The standing category brings together athletes who compete on their feet, sometimes using prostheses or other adaptations. The vision-impaired category includes athletes with visual disabilities who ski with a sighted guide.

Within these macrocategories, there are more specific classes. For athletes with visual impairment, the codes B1, B2, and B3 are used, whereas athletes with physical impairments are grouped under the LW classes. In alpine skiing, however, not every class always competes separately in the final: In several events, a factor system is applied — a mathematical coefficient applied to the raw time that enables a fairer comparison of athletes with different levels of functional limitation within the same race. In practice, the raw time alone is not enough; the result is determined by the time after it has been adjusted by the athlete’s class factor.

For the public, this is often one of the hardest aspects to follow, yet also one of the most fascinating: The on-screen ranking reflects not just finishing order but also the interplay between sporting performance and classification.

Guide-Assisted Race

In Para biathlon and Para cross-country skiing, the basic structure mirrors that of alpine skiing: Competitions are organized into the three categories of vision-impaired, standing, and sitting. Athletes in the vision-impaired category race with a guide; those in the sitting category use a sit-ski; and those in the standing category compete on their feet, with or without adaptations.

Here too classification serves to quantify the functional impact of the impairment on the technical action, not to establish an abstract hierarchy of disability. In biathlon, for example, the skiing component intertwines with the shooting component, and the system must account for how the impairment realistically affects both components. In cross-country skiing, propulsion, balance, coordination, use of the upper and lower limbs, and race technique management come into play.

Board Control and Balance

Among the sports at Milano Cortina 2026, Para snowboard is probably the easiest to explain. Athletes compete in three classes: SB-LL1 and SB-LL2 for lower-limb impairments and SB-UL for upper-limb impairments. The distinction between LL1 and LL2 reflects different functional impacts on the ability to control the board, absorb terrain, and manage jumps, turns, and changes of pace.

Compared with other winter sports, this classification can be more immediately understandable even to nonexperts: fewer codes and greater readability. But the principle is the same — the classification does not label “the person”; it classifies the sporting effect of the impairment in that discipline.

Gateway to Competition

Para ice hockey uses a different approach from skiing and snowboarding. Here the key point is not to split athletes into many competitive classes but to verify that they have an eligible impairment and meet the minimum criteria to participate. Eligible impairments include, among others, muscle strength deficits, amputations or other limb deficiencies, differences in limb length, hypertonia, ataxia, athetosis, and passive range-of-motion limitations.

Essentially, in Para ice hockey, classification works primarily as a regulatory gateway: It establishes who can compete in a sport whose structure and equipment already partially homogenize competition. It is a less visible approach to spectators but no less crucial for sporting fairness.

Gatekeeping, Not Classes

Wheelchair curling likewise centers largely on eligibility. International rules require that an athlete have an eligible impairment and meet the sport’s minimum impairment criteria; athletes who do not meet them are classified as not eligible. The rationale is clear: In wheelchair curling, the rules, equipment, and game format reduce the need to fragment competition into numerous classes.

For this reason, unlike in alpine skiing or snowboarding, spectators perceive classification less during the competition, but the classifiers’ work is still decisive beforehand because it defines who may enter the international competitive system and under what conditions.

Behind the Codes

Behind every code is a technical, not bureaucratic, process. Classification begins with medical documentation, continues with assessment by specialists, and can include observation in training or competition. At the end, the athlete receives not only a sport class but also a status indicating whether the classification is final or subject to review. This happens because some conditions can evolve or because additional observation in competition is needed.

This is an important detail also for those reporting on the Paralympics: The class is not decorative copy for captions but a variable that directly affects how a performance should be read.

Understanding classification also means gaining a deeper view of the sport. Without this step, there is a risk of telling Paralympic stories only as individual narratives of overcoming and missing their technical dimension. With classification, instead, what emerges is the true nature of the Paralympics: Elite competitions built on sophisticated rules to make comparisons as fair as possible.

At Milano Cortina 2026, this issue was far from secondary. In an edition featuring 79 events across six sports, classification represented the invisible infrastructure that made Paralympic performance readable and comparable. It was not a technicality for insiders but one of the main keys to interpreting the sporting value of the competitions.

This story has been translated from Univadis Italy, part of the Medscape Professional Network.