Treatment Letter From a Therapist: Documentation That Supports Continuity of Care

Mental health professionals are frequently asked to provide treatment letters for purposes that extend well beyond psychotherapy itself. A client may need documentation for an employer requesting workplace accommodations, an attorney preparing court materials, a primary care physician coordinating treatment, a university disability office, or an insurance company verifying ongoing care.

Although these requests are common, many clinicians receive little formal training on how to write treatment letters. The challenge lies in balancing two competing responsibilities: providing enough clinical information to meet the request while protecting client confidentiality and avoiding statements that extend beyond the therapist's role or available evidence.

Unlike psychotherapy progress notes, a treatment letter is intended for an external audience. It should be concise, clinically accurate, and written with the expectation that it may become part of a legal, employment, educational, or medical record. Every statement included in the letter should be supported by the clinical record and consistent with the therapist's documented observations.

What Is a Treatment Letter?

A treatment letter is a formal document prepared by a licensed mental health professional that summarizes specific aspects of a client's treatment for an identified third party. Depending on the purpose, it may verify that treatment is occurring, describe functional limitations, outline recommendations, or facilitate communication with another healthcare provider.

Importantly, a treatment letter is not a psychotherapy note or a complete clinical summary. It should disclose only the minimum information necessary for its intended purpose and only with appropriate client authorization, unless disclosure is otherwise permitted or required by law.

For example, an employer requesting confirmation that an employee is participating in treatment typically does not need detailed psychotherapy content. Likewise, a physician coordinating care may require diagnostic and treatment information but not extensive descriptions of personal therapy discussions.

Common Reasons Clients Request a Treatment Letter

Therapists may be asked to prepare letters for a variety of situations, including:

• verification of ongoing psychotherapy;

• workplace accommodations;

• medical leave or return-to-work documentation;

• coordination with physicians or psychiatrists;

• disability services at schools or universities;

• insurance or reimbursement requests;

• court proceedings or legal matters (when appropriate);

• continuity of care during referrals.

Before agreeing to write a letter, it's important to clarify exactly what the recipient needs. Many requests can be addressed with a brief verification letter rather than a detailed clinical summary, reducing unnecessary disclosure of protected health information.

What Should a Therapist Include?

The content should always reflect the purpose of the letter, but most treatment letters include:

• therapist's name, credentials, and contact information;

• date of the letter;

• client's name (with appropriate authorization);

• confirmation of the therapeutic relationship;

• relevant diagnosis, if clinically appropriate;

• dates or duration of treatment;

• current treatment status;

• clinically supported observations related to the request;

• recommendations within the therapist's scope of practice;

• therapist's signature and professional credentials.

One common mistake is including more information than necessary. A treatment letter should answer the recipient's question—not provide a comprehensive history of psychotherapy.

Writing in Objective, Clinical Language

Treatment letters should rely on observable facts and documented clinical findings rather than speculation or advocacy.

For example, instead of writing:

"My client is completely unable to work because of stress."

A more appropriate statement would be:

"Based on the client's current presentation and documented symptoms, the client reports significant difficulty sustaining occupational functioning. Current symptoms include impaired concentration, sleep disturbance, and clinically significant anxiety that interfere with work-related activities."

This distinction strengthens the credibility of the document while remaining within the therapist's professional role.

Sample Treatment Verification Letter

To Whom It May Concern,

This letter confirms that [Client Name] has been receiving psychotherapy services under my care since [Month, Year]. Treatment is ongoing, and the client has attended sessions consistently according to the current treatment plan.

At the client's written request, I am providing verification of treatment only. No additional clinical information has been included to protect the client's confidentiality.

Please contact my office if additional information is required and the client provides appropriate authorization.

Sincerely,

[Therapist Name, Credentials]
[License Number]
[Practice Name]

Sample Coordination of Care Letter

When communicating with another healthcare provider, additional clinical information may be appropriate.

For example:

The client is currently participating in weekly psychotherapy focused on treatment of Major Depressive Disorder and Generalized Anxiety Disorder. Current interventions include Cognitive Behavioral Therapy (CBT), behavioral activation, and relapse prevention strategies. The client demonstrates consistent engagement in treatment and continues to make gradual progress toward established therapeutic goals.

Notice that the letter summarizes treatment without revealing detailed psychotherapy discussions.

Common Documentation Mistakes

Several issues frequently reduce the quality and defensibility of treatment letters:

• including opinions that are not supported by the clinical record;

• disclosing unnecessary confidential information;

• guaranteeing future outcomes ("the client will fully recover");

• making legal conclusions outside the therapist's expertise;

• omitting client authorization when disclosure is required;

• confusing advocacy with objective clinical documentation.

Whenever possible, therapists should distinguish clearly between documented observations, client self-report, and professional opinion.

Conclusion

A well-written treatment letter communicates essential clinical information while respecting confidentiality and professional boundaries. Rather than functioning as a substitute for the clinical record, it serves as a focused document that supports coordination of care, workplace accommodations, educational services, or other legitimate requests.

For therapists, the most effective letters are those that remain objective, disclose only the minimum necessary information, and ensure every statement can be supported by the client's documentation. By approaching treatment letters with the same level of precision used in clinical recordkeeping, mental health professionals can meet administrative needs without compromising ethical standards or the therapeutic relationship.

FAQ

What is a treatment letter from a therapist?

A treatment letter is a professional document that confirms or summarizes aspects of a client's psychotherapy for an authorized third party, such as a physician, employer, insurance company, or educational institution.

Does a treatment letter include therapy notes?

No. Treatment letters are separate from psychotherapy notes and typically contain only the information necessary for the stated purpose.

Can a therapist refuse to write a treatment letter?

Yes. A therapist may decline requests that fall outside their professional scope, require unsupported opinions, or conflict with ethical or legal obligations.

Does a client need to authorize the release of a treatment letter?

In most situations, yes. Written authorization is generally required before disclosing protected health information to a third party, unless another legal exception applies.

How long should a treatment letter be?

Most treatment letters are one page or less. They should be concise, focused, and tailored to the specific purpose of the request.