ICD-10-CM 2027
ICD-10 code for Bulla
From the official ICD-10-CM alphabetic index entry “Bulla (e)”. Page updated September 29, 2026.
About coding Bulla
The ICD-10-CM code for Bulla is R23.8 (Other skin changes). The official index lists 2 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on R23.8.
Within R23, choose R23.8 (Other skin changes) only when documentation doesn't support a more specific option: Cyanosis (R23.0), Pallor (R23.1), Flushing (R23.2), spontaneous ecchymoses (R23.3), changes in skin texture (R23.4) and unspecified skin changes (R23.9).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 606 (Minor Skin Disorders with MCC, relative weight 1.5728) and DRG 607 (Minor Skin Disorders without MCC, relative weight 0.8772), in MDC 09 (Diseases and Disorders of the Skin, Subcutaneous Tissue and Breast), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
More specific Bulla codes (official index)
Common questions about Bulla ICD-10 codes
What is the ICD-10 code for Bulla?
- R23.8 — Other skin changes. More specific codes apply when the documentation supports them: J43.9, P25.8.
What is the ICD-10 code for lung bulla?
- J43.9 — Emphysema, unspecified.
Is R23.8 billable?
- Yes. R23.8 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can R23.8 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict R23.8 as a principal diagnosis.
Is R23.8 a CC or MCC?
- No. R23.8 is neither a CC nor an MCC under MS-DRG v44.0.