R22.0 — Localized swelling, mass and lump, head

R22.0

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

A localised swelling, lump or mass in the head, recorded as a finding.

Also called: head lump, localized swelling head.

When this code is used

Used for localised swelling, mass and lump, head.

Where it sits in ICD-10-CM

Code R22.0 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 R22.0?

R22.0 is the ICD-10-CM diagnosis code for “Localized swelling, mass and lump, head”. A localised swelling, lump or mass in the head, recorded as a finding.

When is code R22.0 used?

Used for localised swelling, mass and lump, head. 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.