Does the VA always require a C&P exam for a disability rating increase?

No. A Compensation and Pension (C&P) exam is not automatically required every time you file for an increased rating. Under 38 CFR 3.159, the VA has a duty to assist that includes obtaining a new exam when one is needed to decide the claim, but if your existing medical records, private treatment notes, and provider statements already contain enough current, detailed information to rate the condition accurately, a rater can sometimes make a decision without scheduling a new exam.

This is more common with conditions that have objective, well-documented symptom patterns in the record, such as migraines rated under 38 CFR 4.124a (Diagnostic Code 8100), where frequency and severity of prostrating attacks can often be determined from treatment notes, pharmacy records, and provider statements about missed work or functional limitation. If your private treatment records already reflect the frequency, duration, and severity criteria the rating schedule asks about, a rater may decide there is sufficient evidence of record (often referred to internally as a 'sufficiency of evidence' determination) and skip the exam step.

That said, skipping the exam is not guaranteed and is not something you can request or rely on. The VA still has discretion to order an exam if the record is ambiguous, outdated, or silent on specific rating criteria, especially for conditions that are harder to evaluate from records alone (like musculoskeletal conditions needing range-of-motion measurements, or mental health conditions needing a current clinical impression). Multiple issues within one claim can also be handled differently - some may be decided on the record while others still trigger an exam.

If you receive a rating decision without an exam and disagree with the result, you still have normal appeal rights: a Supplemental Claim (VA Form 20-0995) with new and relevant evidence, a Higher-Level Review (VA Form 20-0996), or a Notice of Disagreement to the Board (VA Form 10182) if you want to appeal directly. Board-level data on issues that do get appealed (covering over 2.3 million issues decided from 1992 to mid-2026) shows roughly 19% granted, 30% denied, and nearly 46% remanded for more development - but this reflects outcomes for claims that were already appealed to the Board, not the odds of success at the initial rating stage, so it should not be used to predict how an increase claim like this will turn out.

If your rating decision arrives and you believe the percentage doesn't match your actual symptom frequency or severity as documented in your records, request your claims file (C-file) and review exactly what evidence the rater cited before deciding whether to file a Higher-Level Review or submit additional evidence through a Supplemental Claim.