All ICD10 Codes

A66

Non-Billable
ChapterA00–B99
Rankcategory
Official Description

Yaws

Metadata & Insights
  • •2026 ICD-10-CM Edition - Effective October 1, 2025.
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 1: Certain Infectious and Parasitic Diseases (A00-B99).

CH1 Parent Instructions

Includes
  • diseases generally recognized as communicable or transmissible
Excludes1(Not coded here)
  • certain localized infections - see body system-related chapters
Excludes2(Not included here)
  • carrier or suspected carrier of infectious disease (Z22.-)
  • infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)
  • infectious and parasitic diseases specific to the perinatal period (P35-P39)
  • influenza and other acute respiratory infections (J00-J22)
Use Additional Code
  • code to identify resistance to antimicrobial drugs (Z16.-)

A65-A69 Parent Instructions

Excludes2(Not included here)

Instructional Notes

Includes
  • bouba
  • frambesia (tropica)
  • pian

Clinical Hierarchy

CH1Certain infectious and parasitic diseases (A00-B99)
A65-A69Other spirochetal diseases (A65-A69)
A66Yaws
A66.0Initial lesions of yaws
A66.1Multiple papillomata and wet crab yaws
A66.2Other early skin lesions of yaws
A66.3Hyperkeratosis of yaws
A66.4Gummata and ulcers of yaws
A66.5Gangosa
A66.6Bone and joint lesions of yaws
A66.7Other manifestations of yaws
A66.8Latent yaws
A66.9Yaws, unspecified

Applicable Ancestor Context

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

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. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

25 raw paths
Chancre (any genital site) (hard) (hunterian) (mixed) (primary) (seronegative) (seropositive) (syphilitic)2 unique routes
of
yaws→A66
yaws→A66
Frambesia, frambesial (tropica)2 unique routes
initial lesion or ulcer→A66
primary→A66
Frambeside2 unique routes
gummatous→A66
of early yaws→A66
Frambesioma1 unique routes
Direct index entry→A66
Ganglion (compound) (diffuse) (joint) (tendon (sheath))1 unique routes
of yaws (early) (late)→A66
Gangosa1 unique routes
Direct index entry→A66
Ghoul hand1 unique routes
Direct index entry→A66
Goundou1 unique routes
Direct index entry→A66
Granuloma1 unique routes
tropicum→A66
Gumma (syphilitic)4 unique routes
bone
of yaws (late)→A66
ulcerative due to yaws→A66
yaws→A66(2 variants)
bone→A66
Henpue, henpuye1 unique routes
Direct index entry→A66
Hydrarthrosis1 unique routes
of yaws (early) (late)→A66
Hyperkeratosis1 unique routes
due to yaws (early) (late) (palmar or plantar)→A66
Lesion (s) (nontraumatic)1 unique routes
primary
yaws→A66
Mother yaw1 unique routes
Direct index entry→A66
Nodule (s), nodular1 unique routes
juxta-articular
yaws→A66
Osteitis1 unique routes
due to yaws→A66
Papilloma1 unique routes
yaws, plantar or palmar→A66
Papillomata, multiple, of yaws1 unique routes
Direct index entry→A66

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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