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R22.42

R22.42Localized swelling, mass and lump, left lower limb

Billable / specific codeICD-10-CMleft

R22.42 is a billable, specific ICD-10-CM code for localized swelling, mass and lump, left lower limb. It is valid for submission on a claim.

Risk adjustment

R22.42 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Medicare coverage

R22.42 is named in 13 Medicare coverage policies 13 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

  • A52993Billing and Coding: Peripheral Venous Ultrasound
  • A53057Billing and Coding: Home Health Occupational Therapy
  • A53064Billing and Coding: Outpatient Occupational Therapy
  • A53065Billing and Coding: Outpatient Physical Therapy

Related codes at this level

Codes that share R22.4. If R22.42 is not quite right, the correct code is usually one of these.

Questions about R22.42

Is R22.42 a billable ICD-10-CM code?
Yes. R22.42 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does R22.42 sit in the tabular list?
Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99), in the block Symptoms and signs involving the skin and subcutaneous tissue (R20-R23).
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.