R22: Localized swelling, mass and lump of skin and subcutaneous tissue
Codes under R22 (Localized swelling, mass and lump of skin and subcutaneous tissue). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| R22.0 | Localized swelling, mass and lump, head | ✓ |
| R22.0 | Localized swelling, mass and lump, head | ✓ |
| R22.1 | Localized swelling, mass and lump, neck | ✓ |
| R22.1 | Localized swelling, mass and lump, neck | ✓ |
| R22.2 | Localized swelling, mass and lump, trunk | ✓ |
| R22.2 | Localized swelling, mass and lump, trunk | ✓ |
| R22.3 | Localized swelling, mass and lump, upper limb | — |
| R22.3 | Localized swelling, mass and lump, upper limb | — |
| R22.4 | Localized swelling, mass and lump, lower limb | — |
| R22.4 | Localized swelling, mass and lump, lower limb | — |
| R22.9 | Localized swelling, mass and lump, unspecified | ✓ |
| R22.9 | Localized swelling, mass and lump, unspecified | ✓ |
| R22.30 | Localized swelling, mass and lump, unspecified upper limb | ✓ |
| R22.30 | Localized swelling, mass and lump, unspecified upper limb | ✓ |
| R22.31 | Localized swelling, mass and lump, right upper limb | ✓ |
| R22.31 | Localized swelling, mass and lump, right upper limb | ✓ |
| R22.32 | Localized swelling, mass and lump, left upper limb | ✓ |
| R22.32 | Localized swelling, mass and lump, left upper limb | ✓ |
| R22.33 | Localized swelling, mass and lump, upper limb, bilateral | ✓ |
| R22.33 | Localized swelling, mass and lump, upper limb, bilateral | ✓ |
| R22.40 | Localized swelling, mass and lump, unspecified lower limb | ✓ |
| R22.40 | Localized swelling, mass and lump, unspecified lower limb | ✓ |
| R22.41 | Localized swelling, mass and lump, right lower limb | ✓ |
| R22.41 | Localized swelling, mass and lump, right lower limb | ✓ |
| R22.42 | Localized swelling, mass and lump, left lower limb | ✓ |
| R22.42 | Localized swelling, mass and lump, left lower limb | ✓ |
| R22.43 | Localized swelling, mass and lump, lower limb, bilateral | ✓ |
| R22.43 | Localized swelling, mass and lump, lower limb, bilateral | ✓ |
Frequently asked questions
What is ICD-10-CM code R22?
R22 is an ICD-10-CM category covering Localized swelling, mass and lump of skin and subcutaneous tissue. It contains 28 more specific diagnosis codes, 24 of which are billable.
Is R22 a billable code?
No — R22 is a category header and isn't billable on its own. Code to the highest level of specificity using one of its subcodes (for example R22.0 — Localized swelling, mass and lump, head). 24 of the 28 codes under R22 are billable.
What codes fall under R22?
R22 includes R22.0, R22.0, R22.1, R22.1, R22.2, plus 23 more. See the full list with descriptions and billable status above.
More free billing tools: all ICD-10 categories · ICD-10 search · denial codes · Medicare fees
Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
Code the diagnosis right
Join providers across the country delivering modern virtual care with CareNiva. Free to start, ready in minutes.
100% Satisfaction Guaranteed — try it risk-free