R45.851 — Suicidal ideations

R45.851

ICD-10 Chapter 18: Symptoms, Signs & Abnormal Findings — illustrative image — Chapter 18: Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00–R99) — illustrative image

What this code means

Suicidal ideations are thoughts of harming or killing oneself, recorded as a clinical finding requiring careful assessment.

Also called: suicidal ideation, suicidal thoughts.

When this code is used

Used for suicidal ideations.

Where it sits in ICD-10-CM

Code R45.851 belongs to Chapter 18: Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified, which covers codes R00–R99 in the FY2027 ICD-10-CM tabular list. The official description above is copied verbatim from the CDC/NCHS FY2027 code file.

Frequently asked questions

What is ICD-10-CM code R45.851?

R45.851 is the ICD-10-CM diagnosis code for “Suicidal ideations”. Suicidal ideations are thoughts of harming or killing oneself, recorded as a clinical finding requiring careful assessment.

When is code R45.851 used?

Used for suicidal ideations. It belongs to Chapter 18 of ICD-10-CM (Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified).

This guide explains ICD-10-CM codes in plain language for patients, students and other readers. It is educational information only — not coding, billing or medical advice. The code recorded for any real encounter is assigned from the full clinical documentation by the treating team and qualified coders, and only they can decide which code fits a specific case.