2026 ICD-10-CM Diagnosis Code R22.0Localized swelling, mass and lump, head

ICD-10-CM Codes›R00–R99›R20-R23›R22

ICD-10-CM R22.0
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

R22.0 is a billable ICD-10-CM diagnosis code for localized swelling, mass and lump, head. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 606 through 607. As a symptom code, it should not be used as a principal diagnosis once a related definitive diagnosis has been established. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Skin/Subcutaneous signs and symptoms.

Code Identity

ICD-10-CM Code
R22.0
Billable Status
Yes — Valid for Submission
Code Describes
Localized swelling, mass and lump, head
Short Description
Localized swelling, mass and lump, head
Same as the full description in the CMS dataset.
Parent Code
R22
Localized swelling, mass and lump of skin and subcutaneous tissue

Code Classification

ChapterR00–R99Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
SectionR20-R23Symptoms and signs involving the skin and subcutaneous tissue
CategoryR22Localized swelling, mass and lump of skin and subcutaneous tissue
This CodeR22.0Localized swelling, mass and lump, head

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Cyst of face
  • Facial swelling
  • Finding of appearance of nasal mucosa
  • Head and neck swelling
  • Hypothalamic mass
  • Intracranial mass
  • Localized orbital swelling
  • Localized swelling of head
  • Lump on face
  • Mass in pinna
  • Mass lesion of brain
  • Mass of ear structure
  • Mass of hard palate
  • Mass of head
  • Mass of head and/or neck
  • Mass of lip
  • Mass of nasal sinus
  • Mass of nose
  • Mass of oral cavity
  • Mass of palate
  • Mass of parietal bone of skull
  • Mass of petrous part of temporal bone
  • Mass of postauricular region
  • Mass of preauricular region
  • Mass of scalp
  • Mass of skin of head
  • Mass of tongue
  • Mucous membrane swelling
  • Nasal dermoid
  • Nasal mucosa boggy
  • Neck swelling
  • Nodule of nasal cavity
  • Nodule of skin of head
  • Nodule of skin of nose
  • Nodule of soft palate
  • Nodule of subcutaneous tissue of head
  • Nodule of suprahyoid region
  • Pituitary mass
  • Subcutaneous mass of head
  • Swelling around eyes
  • Swelling of eyelid
  • Swelling of head
  • Swelling of lower jaw region
  • Swelling of structure of bilateral eyes
  • Swelling of structure of eye
  • Swelling of structure of left eye
  • Swelling of structure of right eye
  • Swelling over mastoid
  • Swollen nasal mucosa
  • Swollen nose
  • Tongue swelling

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Mass
      • head
    • Mass
      • localized (skin)
        • head
    • Swelling(of)
      • head (localized)
    • Swelling(of)
      • localized (skin)
        • head

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR SYM014
Skin/Subcutaneous signs and symptoms
Default principal diagnosis: inpatient Yes · outpatient Yes

Convert R22.0 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
782.2 Local suprficial swellng
Approximate The match is approximate rather than exact.
ICD-9-CM
784.2 Swelling in head & neck
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About R22.0Overview

Is R22.0 a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report localized swelling, mass and lump, head on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does R22.0 group to?

When localized swelling, mass and lump, head is the principal diagnosis on an inpatient stay, it groups to MS-DRG 606, 607, with relative weights from 0.9064 to 1.5132 depending on complications. Higher weights mean higher Medicare reimbursement.

Can R22.0 be a principal diagnosis?

Use it with care. This is a symptom code, so once a definitive diagnosis explaining the localized swelling, mass and lump, head is established, that condition takes the principal position instead.

What is the ICD-9 equivalent of R22.0?

Under the General Equivalence Mappings, localized swelling, mass and lump, head converts to ICD-9-CM 782.2 (local suprficial swellng) and 784.2 (swelling in head & neck). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.