A66.4

Billable
ChapterA00–B99
Ranksubcategory
Official Description

Gummata and ulcers of yaws

Metadata & Insights
  • 2026 ICD-10-CM Edition - Effective October 1, 2025.
  • Billable/specific code (valid for reimbursement).
  • Chapter 1: Certain Infectious and Parasitic Diseases (A00-B99).

Instructional Notes

Includes
  • Gummatous frambeside
  • Nodular late yaws (ulcerated)
General instructions are available for the parent sections:

Clinical Hierarchy

CH1Certain infectious and parasitic diseases (A00-B99)
A65-A69Other spirochetal diseases (A65-A69)
A66Yaws
A66.4Gummata and ulcers of yaws

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to A66.4:

blockA65-A69
Other spirochetal diseases (A65-A69)
View context instructions
chapterCH1
Certain infectious and parasitic diseases (A00-B99)
View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to A66.4. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

11 raw paths

MS-DRG Classification

2026 v43.1

Cross Reference

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