ICD-10-CM Alphabetic Index · FY 2026 171 Entries
Osteonecrosis in the ICD-10-CM Index ICD-10-CM
The main term Osteonecrosis carries 171 index entries pointing to 62 ICD-10-CM codes. The default entry is M87.9, 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
171
Index Entries
62
Codes Referenced
M87.9
Default Code
O
Letter
171 of 171 shown
ICD-10-CM
Index Entries Under Osteonecrosis 171 entries · 62 codes
Osteonecrosis M87.9
due to
drugs see Osteonecrosis, secondary, due to, drugs
trauma see Osteonecrosis, secondary, due to, trauma
idiopathic aseptic M87.00
ankle M87.07 Non-billable
carpus M87.03 Non-billable
clavicle M87.01 Non-billable
femur M87.05 Non-billable
fibula M87.06 Non-billable
finger M87.04 Non-billable
humerus M87.02 Non-billable
ilium M87.050
ischium M87.050
metacarpus M87.04 Non-billable
metatarsus M87.07 Non-billable
multiple sites M87.09
neck M87.08
pelvis M87.050
pubic ramus [pubis] M87.050
radius M87.03 Non-billable
rib M87.08
scapula M87.01 Non-billable
skull M87.08
tarsus M87.07 Non-billable
tibia M87.06 Non-billable
toe M87.07 Non-billable
ulna M87.03 Non-billable
vertebra M87.08
secondary NEC M87.30
carpus M87.33 Non-billable
clavicle M87.31 Non-billable
due to
drugs M87.10
carpus M87.13 Non-billable
clavicle M87.11 Non-billable
femur M87.15 Non-billable
fibula M87.16 Non-billable
finger M87.14 Non-billable
humerus M87.12 Non-billable
ilium M87.150
ischium M87.150
jaw M87.180
metacarpus M87.14 Non-billable
metatarsus M87.17 Non-billable
multiple sites M87.19
neck M87.188
pubic ramus [pubis] M87.150
radius M87.13 Non-billable
rib M87.188
scapula M87.11 Non-billable
skull M87.188
tarsus M87.17 Non-billable
tibia M87.16 Non-billable
toe M87.17 Non-billable
ulna M87.13 Non-billable
vertebra M87.188
hemoglobinopathy NEC D58.2
carpus D58.2
clavicle D58.2
femur D58.2
fibula D58.2
finger D58.2
humerus D58.2
ilium D58.2
ischium D58.2
metacarpus D58.2
metatarsus D58.2
multiple sites D58.2
neck D58.2
pubic ramus
radius D58.2
rib D58.2
scapula D58.2
skull D58.2
specified NEC D58.2
tarsus D58.2
tibia D58.2
toe D58.2
ulna D58.2
vertebra D58.2
trauma (previous) M87.20
carpus M87.23 Non-billable
clavicle M87.21 Non-billable
femur M87.25 Non-billable
fibula M87.26 Non-billable
finger M87.24 Non-billable
humerus M87.22 Non-billable
ilium M87.250
ischium M87.250
metacarpus M87.24 Non-billable
metatarsus M87.27 Non-billable
multiple sites M87.29
neck M87.28
pubic ramus [pubis] M87.250
radius M87.23 Non-billable
rib M87.28
scapula M87.21 Non-billable
skull M87.28
tarsus M87.27 Non-billable
tibia M87.26 Non-billable
toe M87.27 Non-billable
ulna M87.23 Non-billable
vertebra M87.28
femur M87.35 Non-billable
fibula M87.36 Non-billable
finger M87.34 Non-billable
humerus M87.32 Non-billable
ilium M87.350
in
caisson disease T70.3 Non-billable
carpus T70.3 Non-billable
clavicle T70.3 Non-billable
femur T70.3 Non-billable
fibula T70.3 Non-billable
finger T70.3 Non-billable
humerus T70.3 Non-billable
ilium T70.3 Non-billable
ischium T70.3 Non-billable
metacarpus T70.3 Non-billable
metatarsus T70.3 Non-billable
multiple sites T70.3 Non-billable
neck T70.3 Non-billable
pubic ramus
radius T70.3 Non-billable
rib T70.3 Non-billable
scapula T70.3 Non-billable
skull T70.3 Non-billable
tarsus T70.3 Non-billable
tibia T70.3 Non-billable
toe T70.3 Non-billable
ulna T70.3 Non-billable
vertebra T70.3 Non-billable
ischium M87.350
metacarpus M87.34 Non-billable
metatarsus M87.37 Non-billable
multiple site M87.39
neck M87.38
pubic ramus [pubis] M87.350
radius M87.33 Non-billable
rib M87.38
scapula M87.319
skull M87.38
tarsus M87.379
tibia M87.366
toe M87.379
ulna M87.33 Non-billable
vertebra M87.38
specified type NEC M87.80
carpus M87.83 Non-billable
clavicle M87.81 Non-billable
femur M87.85 Non-billable
fibula M87.86 Non-billable
finger M87.84 Non-billable
humerus M87.82 Non-billable
ilium M87.850
ischium M87.850
metacarpus M87.84 Non-billable
metatarsus M87.87 Non-billable
multiple sites M87.89
neck M87.88
pubic ramus [pubis] M87.850
radius M87.83 Non-billable
rib M87.88
scapula M87.81 Non-billable
skull M87.88
tarsus M87.87 Non-billable
tibia M87.86 Non-billable
toe M87.87 Non-billable
ulna M87.83 Non-billable
vertebra M87.88
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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.
