Terminology and diagnosis

BPD, EUPD, ICD-10 and ICD-11: terms and codes explained

A diagnosis record can use different words or codes depending on the country, health system, and classification version in use. Seeing BPD, EUPD, F60.3, or an ICD-11 reference does not tell you everything about a person or replace a conversation with the clinician who made the record.

Why there are several names

BPD usually means borderline personality disorder. It is the term used on this site because it is the phrase most people search for and is widely used in US clinical information. It describes a pattern of difficulties that can involve emotion regulation, relationships, sense of self, and impulsive behaviour. A qualified professional considers the whole pattern, its history, its impact, and other possible explanations before making a diagnosis.

EUPD means emotionally unstable personality disorder. You may encounter it in some UK or European services, older records, and discussions using ICD terminology. It is often used to refer to the same broad clinical area as BPD, but the language a service uses can vary. Some people prefer BPD, some prefer EUPD, and some dislike both terms. It is reasonable to tell a care team what wording feels respectful or confusing to you.

Neither label is a complete description of someone. It does not tell you their character, capacity for care, safety, intelligence, or future. It also cannot establish a diagnosis from an online symptom list. If a label appears unexpectedly in your notes, ask the service what it means in your particular record and how it was reached.

What is an ICD code?

The International Classification of Diseases (ICD) is a system used to classify health conditions. Different countries and services may use different editions or country-specific modifications. Codes can help services record information, plan care, report data, or process administration. They are not a description of a person's entire experience.

A code also does not show how carefully an assessment was done. Good assessment relies on a detailed discussion of current difficulties, history, functioning, safety, physical health, and possible co-occurring conditions. Read how BPD is assessed for the difference between a classification label and a clinical evaluation.

ICD-10-CM: F60.3 in the United States

In the US ICD-10-CM system, F60.3 is the code labelled borderline personality disorder. ICD-10-CM is the US clinical modification of ICD-10, so it should not be assumed to work identically in every country. A clinician, insurer, school, employer, or legal service may also have separate rules about what a code means in that setting.

If you see F60.3 in a US document, it may identify the diagnosis recorded for that visit or claim. It does not show the severity of a person's current distress, whether the diagnosis is new or historical, what treatment is appropriate, or whether other conditions were considered. Never change medication, stop attending care, or make a legal decision based only on a code seen online or in a portal.

ICD-10 terminology outside the US

In ICD-10-based systems outside the US, services may use emotionally unstable personality disorder language, sometimes with descriptions such as a borderline type. Exact coding practice depends on the national adaptation and the local health system. That is why two records can use different-looking terms while referring to related clinical concepts.

It can be tempting to search a code and decide that it proves a specific diagnosis. Codes need context. A record might contain a provisional diagnosis, a historical diagnosis, a referral reason, an administrative shorthand, or a term chosen for a particular classification system. The professional who documented it is the right person to ask about its status and what happens next.

ICD-11 changed the structure

ICD-11 takes a different approach to personality disorders. Rather than treating borderline personality disorder as one separate category in the same way as older systems, it starts with 6D10, personality disorder, then records severity where applicable. Clinicians can add trait-domain qualifiers and may also add 6D11.5, borderline pattern when that pattern is clinically relevant.

This does not mean that BPD has disappeared, that everyone formerly diagnosed with BPD will receive the same wording, or that you can convert a diagnosis yourself. It means the classification is designed to describe severity and prominent patterns differently. WHO's ICD-11 material lists borderline pattern as an additional qualifier, not a stand-alone internet test result.

Implementation varies. A country, service, clinician, or insurance system may still be using ICD-10 or a local modification, may be moving to ICD-11 on its own timeline, or may use another diagnostic framework alongside it. Ask which system your service uses if this affects your care or records.

What BPD and EUPD do not mean

These terms do not mean someone is manipulative, dangerous, incapable of empathy, or unable to improve. They do not explain every conflict in a relationship. They also do not mean a person has bipolar disorder, autism, ADHD, PTSD, or a dissociative disorder, although conditions can overlap and need careful assessment. Our guides on BPD and bipolar disorder, BPD and PTSD, and BPD and ADHD explain why labels cannot be separated by a single symptom.

The terminology can carry difficult feelings, especially if it was delivered abruptly or if someone has experienced stigma in care. You can ask for a clear explanation, bring a trusted person to an appointment where appropriate, request time to read information, or seek a second clinical opinion through the options available in your health system. It is okay to say, "I need you to explain what this means for my care in plain language."

Questions worth taking to an appointment

• Which term and classification system are you using, and why?
• Is this a current diagnosis, a working assessment, or a note from a previous service?
• What other explanations or co-occurring conditions have you considered?
• What support, therapy, safety planning, or follow-up is available?
• Can you explain how this wording will appear in my records and who can see it?

Those questions focus on understanding and care, rather than treating a code as a verdict. If symptoms are affecting safety, daily life, or relationships, you do not need to resolve terminology before asking for help.

Next steps

• Start with what BPD is for a fuller overview.
• Read how BPD is diagnosed before drawing conclusions from a record or screening result.
• Explore symptoms and diagnostic concepts in non-checklist language.
• Find practical help through the resources page.