Google last week confirmed it is running a small test of ads inside AI Mode for the healthcare vertical, limited to the United States and English-language queries - a notable shift for a category that has been explicitly blocked from appearing within AI-generated search surfaces since the company first began monetising those placements in 2024.

The confirmation came from Ginny Marvin, Ads Product Liaison at Google, in a LinkedIn comment exchange that took place during Google Marketing Live 2026. The event, the 13th annual edition of the conference, was staged on May 20, 2026, at Google's Bay View campus in Mountain View and streamed to more than 100 countries.

What the test involves

According to Marvin, the eligible campaign types for the healthcare test are Performance Max, AI Max with search terms matching, Shopping campaigns, and broad match keywords. "PMax, AI Max with search terms matching, Shopping, and broad match are eligible to serve ads in AI Mode (and AI Overviews)," she wrote.

She also confirmed a specific constraint on creative: the first iteration of the test is limited to creatives that do not use pinning or text disclaimers. "Note that the first iteration of the test is limited to creatives that don't use pinning or text disclaimers," Marvin stated in the exchange.

The limitation on pinning and disclaimers has practical implications for healthcare advertisers. Many healthcare ad creatives rely on pinned assets to keep mandatory regulatory language in fixed positions within responsive search ads. Removing that option from the test means the formats that can run inside AI Mode are a subset of what those advertisers typically use in standard Search. Text disclaimers, which Google began making available to regulated industries as a distinct ad feature in late April 2026, are also excluded from this initial iteration.

Why healthcare was blocked before

The healthcare restriction on AI surfaces was not new. When Google expanded AI Overview ads to 11 countries beyond the United States in December 2025, the documentation at the time was explicit: the company did not show ads in AI Overviews for sensitive verticals including healthcare, finance, alcohol, gambling, adult content, and politics.

That restriction applied specifically to placements within the AI-generated summary itself, not to positions above or below the AI layer. Healthcare advertisers could still appear in traditional search positions around an AI Overview, but the within-summary placement - which research suggests captures a growing share of user attention - was categorically off-limits.

The rationale was not stated explicitly in the documentation, but the logic is visible in the broader policy context. AI-generated answers for health queries are treated differently from commercial queries because the stakes of misinformation are higher. A user asking about symptoms, drug interactions, or treatment options is in a qualitatively different position from a user shopping for a new laptop. Google blocked healthcare ads from appearing inside AI Overviews and AI Mode in the same policy sweep that also excluded finance and gambling.

As noted by PPC Land in March 2026, Google at the time blocked ads within AI summaries for health-related queries, classifying healthcare as a sensitive vertical alongside finance and gambling - a restriction that created an asymmetry for the marketing community, since AI search was reshaping how users encountered health information at enormous scale while the advertising access points remained constrained.

The context: AI Mode at a billion users

The timing of the healthcare test matters. Google Marketing Live 2026 was staged as AI Mode crossed 1 billion monthly active users globally. Queries in AI Mode are more than doubling every quarter since launch, and 1 in 6 queries are non-text, using voice or images. AI Mode searches are on average three times as long as traditional searches.

That scale makes the healthcare exclusion commercially significant. Health-related queries are among the highest-volume categories in search, and the healthcare, pharmaceutical, and medical devices sectors are major advertisers. The prospect of those advertisers gaining access to an AI Mode surface used by a billion people a month is a significant change in the available inventory.

It also lands in a specific context for the health sector. An Index Exchange analysis published in March 2026 found that health and nutrition verticals saw ad opportunity declines in the range of 40 to 50% throughout 2025, with the report attributing much of the decline to the increased prevalence of AI Overviews in health-related search results. When an AI Overview answers a health query directly, the click that would have gone to a publisher page - and generated an ad impression - does not happen. The monetization opportunity is collapsing for publishers while Google has simultaneously been building out its own within-surface ad formats.

The public exchange: broad match and Smart Bidding eligibility

The LinkedIn comment thread in which Marvin confirmed the healthcare test began with a practitioner question about which campaign types are eligible for AI ad placements generally. Ben Goldman, Senior Strategist, Paid Media at Fathom, asked about the status of broad match and Smart Bidding relative to the newer AI-focused campaign types.

Goldman's question was partly sparked by messaging around Google Marketing Live 2026 that emphasized Performance Max and AI Max for Search as the recommended paths to AI Mode placements. His concern: did the platform's emphasis on those campaign types mean that broad match with Smart Bidding was no longer a viable route to serving in AI surfaces?

Goldman had flagged this question earlier in the thread after a separate practitioner, Anthony Higman, Founder and CEO at ADSQUIRE, relayed a clarification from a question and answer session. According to Higman, Marvin had confirmed that broad match and Smart Bidding are in fact still eligible for AI ad placements, but that Google is suggesting AI Max and Performance Max because of the longer and more complex queries that AI Mode generates.

Marvin then confirmed the healthcare-specific point in a direct reply to Goldman, who responded: "Thank you, appreciate the response. I didn't realize this test also included healthcare ads in AIOs as well."

The exchange illustrates a recurring tension in how Google communicates changes to its ad platform. The official keynote and product documentation lean toward the newest campaign types, which can leave advertisers running legacy configurations uncertain about their eligibility. The actual policy - that broad match with Smart Bidding remains eligible - is functionally important for large healthcare accounts that may not have migrated to AI Max or Performance Max.

What campaign types are eligible for AI Mode broadly

Marvin's confirmation in the healthcare context also reinforced the general eligibility rules for AI Mode placements. PMax, AI Max with search terms matching, Shopping, and broad match all qualify. That is consistent with the framework that has applied to AI Overviews, where Google has required AI-powered targeting solutions - specifically broad match for Search campaigns or keywordless targeting through Performance Max, AI Max for Search, or Dynamic Search Ads - because AI Mode and AI Overview queries are conversational, long-form, and unpredictable by traditional keyword structures.

Dynamic Search Ads are set to automatically upgrade to AI Max in September 2026, meaning that eligible campaign pool will effectively absorb DSA traffic into the AI Max category by the end of the year. For the healthcare test, the eligible formats map to the same targeting logic, though the creative constraints narrow the field further.

The disclaimer and pinning restriction

The exclusion of pinned assets and text disclaimers from the initial healthcare test is technically significant and worth examining in some detail.

Text disclaimers are a distinct field in the Google Ads interface, separate from headlines and descriptions, that allow advertisers in regulated industries to attach mandatory disclosures to their ads. Google made them available to financial services and other regulated sectors in late April 2026. For healthcare advertisers, disclaimers are sometimes legally required - depending on the product category, jurisdiction, and regulatory framework - and are routinely used in pharmaceutical and medical device advertising to satisfy fair balance requirements.

Pinning is the mechanism in responsive search ads that locks a specific headline or description into a fixed position. Healthcare advertisers frequently pin assets to ensure that risk warnings, indications, or mandatory language appear consistently regardless of which asset combination the system selects. Without pinning, the system chooses asset combinations dynamically, which can result in mandatory language being omitted from a given ad impression.

The current test excludes both. That means the healthcare advertising formats that can appear inside AI Mode at this stage are those without required disclosures or fixed-asset requirements - typically brand awareness or general inquiry formats rather than direct product promotion in heavily regulated categories. Pharmaceutical advertising in the United States, for instance, generally cannot run without fair balance language for prescription drug products, which limits which parts of the healthcare sector can participate in the test as currently scoped.

Broader implications for healthcare advertisers

The test opens a question that healthcare marketers will be watching closely: what does the eventual full integration of healthcare ads into AI Mode look like, and on what timeline?

Several things need to be in place before the test can expand. Google would need to support pinned assets and text disclaimers within the AI Mode ad format. The current architecture of those formats - where ad copy is generated or adapted dynamically to match the specific query and the AI-generated answer - sits in some tension with the static, mandatory-language requirements of pharmaceutical and medical device advertising.

That tension is not unique to healthcare. Financial services advertising carries similar constraints around mandated disclosures. The healthcare test may function partly as an engineering probe - gathering data on how the AI Mode ad rendering pipeline interacts with regulated creative before the full disclaimer infrastructure is built.

For accounts already running Performance Max, AI Max, or broad match campaigns in the healthcare space, the immediate practical question is whether the test is opt-in or automatic. Marvin did not specify the selection mechanism in the LinkedIn thread. What is clear is that the test is small in scope, limited to the US, and limited to English-language queries.

Google had previously simplified healthcare ad enforcement in August 2025 by removing the Restricted Medical Content label from its policies while maintaining existing certification requirements. That move was framed as an internal simplification rather than a change in what was permitted. The current development is different in nature: it is not a simplification of enforcement but a direct expansion of where certified healthcare advertisers can serve their ads.

AI Mode at GML 2026: the wider picture

The healthcare test is one specific data point within a much larger set of announcements at Google Marketing Live 2026. The keynote, led in its advertising section by Vidhya Srinivasan, VP and GM of Google Ads and Commerce, introduced four new AI search ad formats: Conversational Discovery ads and Highlighted Answers - both in testing inside AI Mode in the United States - and AI-powered Shopping ads and Business Agent for Leads, both coming to standard Search.

Google's GML 2026 recap on PPC Land documented how Srinivasan framed the shift: "Now, you can ask Google anything, so the best ads must be answers." That framing is relevant to the healthcare test. In AI Mode, the ad does not sit above or below an organic result - it responds to a query as part of a conversational interface. For healthcare queries, where the user is often asking for specific information about symptoms, treatments, or providers, the format creates a different kind of commercial interaction than traditional search advertising.

PPC Land has tracked how mid-conversation ad placements in AI Mode are formatted identically to organic recommendations, distinguished only by a small Sponsored label. That design question has particular weight in a healthcare context, where the blending of commercial and informational content carries additional responsibility.

Timeline

  • October 2024 - Google begins testing ads within AI Overviews in the US. The launch excludes sensitive verticals including healthcare. (PPC Land)
  • August 1, 2025 - Google simplifies healthcare ad enforcement by removing the Restricted Medical Content label while maintaining existing certification requirements. (PPC Land)
  • November 2025 - Adthena detects ads appearing inside AI Overviews at 0.052% frequency across 25,000 SERPs.
  • December 19, 2025 - Google expands AI Overview ads to 11 countries. Healthcare remains a blocked vertical for within-summary placements. (PPC Land)
  • December 20, 2025 - Google gives programmatic buyers new freedoms on prescription drug ads. (PPC Land)
  • February 11, 2026 - Google announces shopping ads in AI Mode, targeting a surface that has crossed 75 million daily active users. (PPC Land)
  • March 17, 2026 - Google's Check Up 2026 event highlights that healthcare is responsible for approximately 1 billion search queries per day. Healthcare remains blocked from within-AI-summary placements at this point. (PPC Land)
  • March 31, 2026 - Index Exchange analysis finds health and nutrition verticals saw ad opportunity declines of 40 to 50% during 2025, linked to AI Overview expansion. (PPC Land)
  • April 15, 2026 - Google announces the September 2026 deprecation of Dynamic Search Ads, with automatic migration to AI Max. (PPC Land)
  • Late April 2026 - Google makes text disclaimer fields available to regulated industries in Google Ads.
  • May 19, 2026 - Google I/O 2026 previews AI Mode changes, upgrades AI Mode to Gemini 3.5 Flash, one day before GML 2026.
  • May 20, 2026 - Google Marketing Live 2026 takes place. Ginny Marvin, Ads Product Liaison at Google, confirms in a LinkedIn comment that Google is beginning a small test of ads in AI Mode for the healthcare vertical in the US for English-language queries. (PPC Land GML recap)

Summary

Who: Google, confirmed through Ginny Marvin, Ads Product Liaison at Google. Healthcare advertisers in the United States running Performance Max, AI Max for Search, Shopping, or broad match campaigns are affected.

What: Google is running a small test of ads inside AI Mode and AI Overviews for the healthcare vertical. Eligible campaign types are Performance Max, AI Max with search terms matching, Shopping, and broad match. The first iteration of the test is limited to creatives without pinned assets or text disclaimers.

When: The test was confirmed by Ginny Marvin in a LinkedIn exchange on May 20, 2026, during Google Marketing Live 2026. The test had already been running for "a few weeks" prior to the confirmation, according to a practitioner who flagged it in the thread.

Where: The test is limited to the United States and to English-language queries inside AI Mode and AI Overviews.

Why: AI Mode has crossed 1 billion monthly active users, making the healthcare exclusion from within-surface ad placements increasingly commercially significant. Health queries are among the highest-volume categories in search. The test may also serve as an engineering probe for how AI Mode's dynamic creative architecture interacts with the pinning and disclaimer requirements that are standard in regulated healthcare advertising, ahead of a potential broader rollout.