ICD-10-CM Alphabetic Index · FY 2026 39 Entries
Tenosynovitis in the ICD-10-CM Index ICD-10-CM
The main term Tenosynovitis carries 39 index entries pointing to 24 ICD-10-CM codes. The default entry is M65.90, the code the bare main term maps to; every indented line below refines the term by site, cause, or type. Verify any candidate code in the Tabular List before using it.
✓ Built from the official CMS FY 2026 index fileEffective Oct 1, 2025 – Sep 30, 2026
39
Index Entries
24
Codes Referenced
M65.90
Default Code
T
Letter
39 of 39 shown
ICD-10-CM
Index Entries Under Tenosynovitis 39 entries · 24 codes
Tenosynovitis M65.90
adhesive see Tenosynovitis, specified type NEC
shoulder see Capsulitis, adhesive
bicipital (calcifying) see Tendinitis, bicipital
gonococcal A54.49
in (due to)
crystals M65.8 Non-billable
gonorrhea A54.49
syphilis (late) A52.78
use, overuse, pressure see also Disorder, soft tissue, due to use
specified NEC see Disorder, soft tissue, due to use, specified NEC
infective NEC M65.1 Non-billable
ankle M65.17 Non-billable
foot M65.17 Non-billable
forearm M65.13 Non-billable
hand M65.14 Non-billable
lower leg M65.16 Non-billable
multiple sites M65.19
pelvic region M65.15 Non-billable
shoulder region M65.11 Non-billable
specified site NEC M65.18
thigh M65.15 Non-billable
upper arm M65.12 Non-billable
radial styloid M65.4
shoulder region M65.81 Non-billable
adhesive see Capsulitis, adhesive
specified type NEC M65.88
ankle M65.87 Non-billable
foot M65.87 Non-billable
forearm M65.83 Non-billable
hand M65.84 Non-billable
lower leg M65.86 Non-billable
multiple sites M65.89
pelvic region M65.85 Non-billable
shoulder region M65.81 Non-billable
specified site NEC M65.88
thigh M65.85 Non-billable
upper arm M65.82 Non-billable
tuberculous see Tuberculosis, tenosynovitis
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Related Index Terms
Source: Centers for Medicare & Medicaid Services, FY 2026 ICD-10-CM Index to Diseases and Injuries release files, effective October 1, 2025 through September 30, 2026.
