Program Signals and Letters of Intent: Residency 2027

Program Signals and Letters of Intent: Residency 2027

A residency program signal does not oblige you to rank that program first, or at all. The 2027 NRMP agreement lets you keep your signals confidential and bars programs from asking about them. Your rank order list, certified by 9 p.m. ET on March 3, 2027 (2027 Match calendar), is the only preference the Match uses.

Our view: you spent the signal in September, before you had seen the program. After the interview, a signaled program earns a letter only if it is still at the top of your list, your specialty allows letters, and you have something to say that the signal didn't. "As my signal showed" is not a reason. Every rule a letter must follow is in the residency letter of intent rules for 2027.

Every NRMP and specialty document quoted below was checked on November 7, 2026. The specialty guides are the 2026–27 editions, for the 2027 Match.

What NRMP says about signals and your rank list

The 2027 Match Participation Agreement for Applicants (MPA) gives you the right to keep signals private. Section 6.4 lists, among the rights you have "At all times":

"Keep confidential all information pertaining to preference signals sent to programs if the applicant is participating in a specialty that has implemented preference signaling"

Section 6.5 then says programs are not authorized to:

"2. Request that applicants reveal any information about the programs to which they may have sent a preference signal, if applicable;

3. Request that applicants reveal preference signal(s) if in a specialty participating in preference signaling;

4. Request that applicants reveal their ranking preferences"

On ranking, NRMP's Rank Your Programs page says: "The matching algorithm attempts to place you in the most preferred program possible, so be sure to rank programs in order of your true preference and not where you think you will match." The Code of Conduct for Applicants says applicants "should create rank order lists based on their true preferences, the characteristics of the programs interviewed, and the perceived alignment of the applicant's capabilities and interests with program mission, aims, and eligibility."

Note the phrase "the characteristics of the programs interviewed." That is what your rank list rests on. A signal you sent before any interview doesn't appear anywhere in it.

What a signal already told the program

Specialty guides describe the signal as a statement made at application time:

• Family medicine: "Applicants should use signals to indicate genuine interest in their top choices of family medicine programs at the time of application." (OPDA family medicine guide)
• Dermatology: "Signals should be used to denote an applicant's true preferences." (APD statement, May 1, 2026)
• Diagnostic radiology: "Signals are largely the preferred method for showing interest in a program." (OPDA radiology guide)
• Anesthesiology: "Programs will NOT be able to see which other programs an applicant has signaled," and signals "are not further presented in any particular order. In other words, there is not a gold number 1, gold number 2, etc." (OPDA anesthesiology guide)

So a signal tells a program it was among your choices in September. In dermatology's words, gold signals let applicants "denote their top 3 programs." A signal doesn't say where the program sits among those few, and it says nothing about how the interview went. A letter after the interview can only add to the signal by covering what happened since.

2026–27 signal counts and letter guidance by specialty

Counts come from each specialty's 2026–27 guide. The letter column is our short label. The full quoted wording for each specialty is in the 2027 letter of intent table.

Two patterns matter for letters. First, the specialties with the most signals don't have the loosest letter rules: plastic surgery has 20 signals and asks for no post-interview contact, and dermatology has 28 and asks for none. Second, emergency medicine and OB-GYN take applications through ResidencyCAS, not ERAS, according to their guides. Your signals live in whichever system your specialty uses. Whether to signal your home or away program is a separate rule, covered in letters of intent to your home or away program.

Does a signal oblige you to rank the program first?

None of the NRMP documents quoted here says it does, and the MPA's confidentiality rules point the other way. If programs can't ask about signals, a signal can't create a ranking obligation they could check.

Our view: rank every program, signaled or not, by where you would rather train after the interviews. That's what NRMP's "true preference" instruction says, and the algorithm is built for it. NRMP's algorithm page says it "attempts to place an applicant (Applicant A) into the program indicated as most preferred on Applicant A's rank order list." Moving a signaled program down your list doesn't break any rule.

The countercase: if a signaled program is still your first choice after the interview, rank it first. That isn't loyalty to the signal. It's what your preference is. The signal and the rank just happen to agree.

What nobody publishes: how any individual program weighs a signal at ranking time, as opposed to at interview selection. The 12 specialty documents in the table discuss signals for interview offers. We searched each one, and none has a sentence linking signals to rank lists.

After the interview: does a signaled program need a letter?

Run these checks in order. Stop at the first "no."

1. Does your specialty allow letters? Dermatology and plastic surgery: no letter. Family medicine, pediatrics and psychiatry discourage them. OB-GYN and radiology programs set their own preference, so check the program's page. If your specialty or program says no, stop here.
2. Is the program still first (for a letter of intent) or near the top (for a letter of interest)? Decide this from the interview, not the signal.
3. Is the program's list still open? In internal medicine and pediatrics (and vascular surgery), programs in the NRMP lock pilot may lock their lists early. The 2027 process and timeline sets the target as "by 11:59 pm EST on Monday, February 8," and says "Once certified and locked, programs cannot uncertify and edit their ROL under any circumstance." Check the lock symbol in R3 before you write.
4. Do you have something the signal didn't say? That means a reason from the interview day, or a dated update. If your only reason is the signal, don't send.
5. Is this your only first-choice letter? One program gets "you're my first choice." Pediatrics puts it in writing: letters of intent "should only be sent to one program."

If you passed all five, write the letter. If you wrote a signal statement (anesthesiology, plastic surgery), don't paste it in again. The program already has it.

Constructed examples: a letter that leans on the signal, and one that adds to it

Two constructed examples, written by us, not real applicant letters. Context (invented): Kenji Watanabe gold-signaled an internal medicine program in September, interviewed in December, and after the interview still ranks it first. The program hasn't locked its list.

Weak version (65 words):

Dear Dr. Falk,

As you know from my gold signal, your program has been my top choice since I applied. My interview only confirmed that. I am writing to let you know I will rank your program first. I hope this shows how serious my interest is, and I hope it helps as you finalize your list. Thank you for considering my application.

Kenji Watanabe

Revised version (92 words):

Dear Dr. Falk,

Thank you for my interview on December 9. I will rank your program first. The reason is something I learned that day: residents on the county hospital wards rotate through the same continuity clinic in all three years. I spent my sub-internship building discharge plans for patients who had no follow-up, and I want to train where I see the same patients after discharge. Since the interview, my case report on delayed diagnosis of adrenal insufficiency was accepted for a regional internal medicine meeting in February 2027.

Kenji Watanabe

What changed:

• The signal is gone. The program already has it. The revised letter states the commitment once, as a present fact: "I will rank your program first."
• The reason comes from the interview. The weak version's only reason is that the signal was true. The revised version names one feature (continuity clinic across three years), says where Kenji learned it (interview day), and says what he would do with it.
• "I hope it helps" is cut. It asks the program to act on the letter, which pushes toward lobbying for a rank. The Code of Conduct says applicants "must not solicit or engage in post-interview communication for the purposes of influencing or ascertaining a program's ranking intentions."
• The update is new and dated. An accepted abstract the program doesn't have yet. Leave out anything already in ERAS.

Questions about signals and letters of intent

Can a program ask whether I signaled it?

No. MPA section 6.5 says programs are not authorized to "Request that applicants reveal preference signal(s) if in a specialty participating in preference signaling." If one asks, you don't have to answer. Section 7.5 says communication violations "must be reported to the NRMP at policy@nrmp.org."

I signaled a program but didn't like the interview. Do I still have to rank it?

No. NRMP tells you to rank only programs "where you are able and would be happy to train," on its Rank Your Programs page. Every program on your list creates a binding commitment if you match there.

Should my letter mention that I signaled them?

Leave it out. It adds nothing the program doesn't already have, and it uses up a sentence that could hold a reason from the interview.

Does a silver signal mean I should send a letter of interest?

The signal tier doesn't decide it. Run the five checks above. A silver-signaled program that became your first choice after the interview can get a letter of intent if your specialty allows one. Couples who signaled the same programs can follow the couples match letter of intent after interviews.

For how EM's no-home-signal rule shapes the letter, see the EM letter of intent guide.

OB-GYN programs each post their own rule; the OB-GYN letter of intent page compares three.

Anesthesiology programs already hold your signal statement; the anesthesiology letter of interest page shows what to add instead.

Radiology applicants with a separate prelim year should read the radiology residency letter of intent guide, which covers the letter to the PGY-1 program as well.

Get a free review of your residency letter

Get a free Quick Review of your residency letter against GradPilot's residency letter of intent rubric. It checks that your reason for the program comes from what you learned there, that your interest is stated once at its true strength, that any update is new and dated, and that nothing in it asks about ranking. Paste your specialty's or program's instruction above the draft, and the review checks the letter against it.

More residency letter guides:

• Residency letter of interest before an interview: what to send when a signal didn't bring an interview.
• Residency letter of intent examples: three full letters annotated line by line.
• ERAS 2027 timeline: when signals are set and when ranking opens.

Sources

Retrieved November 7, 2026, except where noted.

• NRMP, 2027 Match Participation Agreement for Applicants: sections 6.4 and 6.5 (signal confidentiality), 7.5 (reporting).
• NRMP, Rank Your Programs: true-preference instruction; rank only where you would be happy to train.
• NRMP, Match Code of Conduct for Applicants: true preferences; post-interview communication limits.
• NRMP, The Matching Algorithm: applicant-proposing placement.
• NRMP, 2027 Main Residency Match Calendar: March 3, 2027, 9 p.m. ET certification deadline.
• NRMP, 2027 Voluntary ROL Lock process and timeline: February 8, 2027 lock target.
• OPDA 2026–27 specialty guides (published by CMSS): internal medicine, OB-GYN, anesthesiology, diagnostic radiology, emergency medicine, family medicine, psychiatry, general surgery, plastic surgery (integrated), orthopaedic surgery: signal counts, communication guidance.
• Association of Professors of Dermatology, statement on the 2026–2027 application cycle (May 1, 2026): 28 signals; post-interview letters.
• APPD and partners, 2026–27 pediatrics residency recruitment recommendations (June 2026): 5 signals; one-program letter rule.
• AAMC's program signaling page for the 2027 ERAS cycle returned HTTP 403 to our request and is not quoted.