L05.91
L05.91: Pilonidal cyst without abscess
Billable / specific codeICD-10-CM
L05.91 is a billable, specific ICD-10-CM code for pilonidal cyst without abscess. It is valid for submission on a claim.
Check L05.91 with the rest of the claim: free scrubberExcludes2: not included here, but may coexist
The excluded condition is not part of this code, but a patient can have both. You may code both.
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Pilonidal dimple
- Postanal dimple
- Pilonidal cyst NOS
Other codes that can never be billed with L05.91
Their own Excludes1 notes name this code, so the conflict is not listed above.
Risk adjustment
No CMS-HCC V28 category: this code does not change a RAF score.
Medicare coverage
L05.91 is named in 1 Medicare coverage policy: 1 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.
- A56766Billing and Coding: Incision and Drainage (I&D) of Abscess of Skin, Subcutaneous and Accessory Structures
Alphabetic index entries that lead here
- Cyst›pilonidal(infected) (rectum)
Code history
Unchanged in every release from FY2024 to FY2027.