ICD-10 Code for Osteonecrosis
The ICD-10-CM code for osteonecrosis is M87.9 — Osteonecrosis, unspecified. This is the code the Alphabetic Index gives for osteonecrosis with no further qualifier, valid for FY2027 (October 1, 2026 – September 30, 2027).
BillableUnspecified
M87.9 is billable but unspecified. If the documentation names a type, site or cause, one of the more specific codes below is likely expected.
Which osteonecrosis code should you use?
The Alphabetic Index lists 72 codes under Osteonecrosis. Which one applies depends on the qualifier documented in the record — the type, site, cause, or associated condition. Find the qualifier below, then verify the code in the Tabular List before using it.
By type
Osteonecrosis idiopathic aseptic
| ankle | M87.07 | Idiopathic aseptic necrosis of ankle, foot and toes | not billable |
| carpus | M87.03 | Idiopathic aseptic necrosis of radius, ulna and carpus | not billable |
| clavicle | M87.01 | Idiopathic aseptic necrosis of shoulder | not billable |
| femur | M87.05 | Idiopathic aseptic necrosis of pelvis and femur | not billable |
| fibula | M87.06 | Idiopathic aseptic necrosis of tibia and fibula | not billable |
| finger | M87.04 | Idiopathic aseptic necrosis of hand and fingers | not billable |
| humerus | M87.02 | Idiopathic aseptic necrosis of humerus | not billable |
| ilium | M87.050 | Idiopathic aseptic necrosis of pelvis | |
| ischium | M87.050 | Idiopathic aseptic necrosis of pelvis | |
| metacarpus | M87.04 | Idiopathic aseptic necrosis of hand and fingers | not billable |
| metatarsus | M87.07 | Idiopathic aseptic necrosis of ankle, foot and toes | not billable |
| multiple sites | M87.09 | Idiopathic aseptic necrosis of bone, multiple sites | |
| neck | M87.08 | Idiopathic aseptic necrosis of bone, other site | |
| pelvis | M87.050 | Idiopathic aseptic necrosis of pelvis | |
| pubic ramus [pubis] | M87.050 | Idiopathic aseptic necrosis of pelvis | |
| radius | M87.03 | Idiopathic aseptic necrosis of radius, ulna and carpus | not billable |
| rib | M87.08 | Idiopathic aseptic necrosis of bone, other site | |
| scapula | M87.01 | Idiopathic aseptic necrosis of shoulder | not billable |
| skull | M87.08 | Idiopathic aseptic necrosis of bone, other site | |
| tarsus | M87.07 | Idiopathic aseptic necrosis of ankle, foot and toes | not billable |
| tibia | M87.06 | Idiopathic aseptic necrosis of tibia and fibula | not billable |
| toe | M87.07 | Idiopathic aseptic necrosis of ankle, foot and toes | not billable |
| ulna | M87.03 | Idiopathic aseptic necrosis of radius, ulna and carpus | not billable |
| vertebra | M87.08 | Idiopathic aseptic necrosis of bone, other site |
Osteonecrosis secondary NEC
| carpus | M87.33 | Other secondary osteonecrosis of radius, ulna and carpus | not billable |
| clavicle | M87.31 | Other secondary osteonecrosis, shoulder | not billable |
| femur | M87.35 | Other secondary osteonecrosis, pelvis and femur | not billable |
| fibula | M87.36 | Other secondary osteonecrosis, tibia and fibula | not billable |
| finger | M87.34 | Other secondary osteonecrosis, hand and fingers | not billable |
| humerus | M87.32 | Other secondary osteonecrosis, humerus | not billable |
| ilium | M87.350 | Other secondary osteonecrosis, pelvis | |
| ischium | M87.350 | Other secondary osteonecrosis, pelvis | |
| metacarpus | M87.34 | Other secondary osteonecrosis, hand and fingers | not billable |
| metatarsus | M87.37 | Other secondary osteonecrosis, ankle and foot | not billable |
| multiple site | M87.39 | Other secondary osteonecrosis, multiple sites | |
| neck | M87.38 | Other secondary osteonecrosis, other site | |
| pubic ramus [pubis] | M87.350 | Other secondary osteonecrosis, pelvis | |
| radius | M87.33 | Other secondary osteonecrosis of radius, ulna and carpus | not billable |
| rib | M87.38 | Other secondary osteonecrosis, other site | |
| scapula | M87.319 | Other secondary osteonecrosis, unspecified shoulder | |
| skull | M87.38 | Other secondary osteonecrosis, other site | |
| tarsus | M87.379 | Other secondary osteonecrosis, unspecified toe(s) | |
| tibia | M87.366 | Other secondary osteonecrosis, unspecified fibula | |
| toe | M87.379 | Other secondary osteonecrosis, unspecified toe(s) | |
| ulna | M87.33 | Other secondary osteonecrosis of radius, ulna and carpus | not billable |
| vertebra | M87.38 | Other secondary osteonecrosis, other site | |
| due to › drugs | M87.10 | Osteonecrosis due to drugs, unspecified bone | |
| due to › hemoglobinopathy NEC | D58.2 | Other hemoglobinopathies | |
| due to › trauma | M87.20 | Osteonecrosis due to previous trauma, unspecified bone | |
| in › caisson disease | T70.3 | Caisson disease [decompression sickness] | not billable |
| due to › drugs › carpus | M87.13 | Osteonecrosis due to drugs of radius, ulna and carpus | not billable |
| due to › drugs › clavicle | M87.11 | Osteonecrosis due to drugs, shoulder | not billable |
| due to › drugs › femur | M87.15 | Osteonecrosis due to drugs, pelvis and femur | not billable |
| due to › drugs › fibula | M87.16 | Osteonecrosis due to drugs, tibia and fibula | not billable |
| due to › drugs › finger | M87.14 | Osteonecrosis due to drugs, hand and fingers | not billable |
| due to › drugs › humerus | M87.12 | Osteonecrosis due to drugs, humerus | not billable |
| due to › drugs › ilium | M87.150 | Osteonecrosis due to drugs, pelvis | |
| due to › drugs › ischium | M87.150 | Osteonecrosis due to drugs, pelvis | |
| due to › drugs › jaw | M87.180 | Osteonecrosis due to drugs, jaw | |
| due to › drugs › metacarpus | M87.14 | Osteonecrosis due to drugs, hand and fingers | not billable |
| due to › drugs › metatarsus | M87.17 | Osteonecrosis due to drugs, ankle, foot and toes | not billable |
| due to › drugs › multiple sites | M87.19 | Osteonecrosis due to drugs, multiple sites | |
| due to › drugs › neck | M87.188 | Osteonecrosis due to drugs, other site | |
| due to › drugs › pubic ramus [pubis] | M87.150 | Osteonecrosis due to drugs, pelvis | |
| due to › drugs › radius | M87.13 | Osteonecrosis due to drugs of radius, ulna and carpus | not billable |
| due to › drugs › rib | M87.188 | Osteonecrosis due to drugs, other site | |
| due to › drugs › scapula | M87.11 | Osteonecrosis due to drugs, shoulder | not billable |
| due to › drugs › skull | M87.188 | Osteonecrosis due to drugs, other site | |
| due to › drugs › tarsus | M87.17 | Osteonecrosis due to drugs, ankle, foot and toes | not billable |
| due to › drugs › tibia | M87.16 | Osteonecrosis due to drugs, tibia and fibula | not billable |
| due to › drugs › toe | M87.17 | Osteonecrosis due to drugs, ankle, foot and toes | not billable |
| due to › drugs › ulna | M87.13 | Osteonecrosis due to drugs of radius, ulna and carpus | not billable |
| due to › drugs › vertebra | M87.188 | Osteonecrosis due to drugs, other site | |
| due to › hemoglobinopathy NEC › carpus | D58.2 | Other hemoglobinopathies | |
| due to › hemoglobinopathy NEC › clavicle | D58.2 | Other hemoglobinopathies | |
| due to › hemoglobinopathy NEC › femur | D58.2 | Other hemoglobinopathies | |
| due to › hemoglobinopathy NEC › fibula | D58.2 | Other hemoglobinopathies | |
| due to › hemoglobinopathy NEC › finger | D58.2 | Other hemoglobinopathies | |
| due to › hemoglobinopathy NEC › humerus | D58.2 | Other hemoglobinopathies | |
| due to › hemoglobinopathy NEC › ilium | D58.2 | Other hemoglobinopathies | |
| due to › hemoglobinopathy NEC › ischium | D58.2 | Other hemoglobinopathies | |
| due to › hemoglobinopathy NEC › metacarpus | D58.2 | Other hemoglobinopathies | |
| due to › hemoglobinopathy NEC › metatarsus | D58.2 | Other hemoglobinopathies | |
| due to › hemoglobinopathy NEC › multiple sites | D58.2 | Other hemoglobinopathies | |
| due to › hemoglobinopathy NEC › neck | D58.2 | Other hemoglobinopathies | |
| due to › hemoglobinopathy NEC › radius | D58.2 | Other hemoglobinopathies | |
| due to › hemoglobinopathy NEC › rib | D58.2 | Other hemoglobinopathies | |
| due to › hemoglobinopathy NEC › scapula | D58.2 | Other hemoglobinopathies | |
| due to › hemoglobinopathy NEC › skull | D58.2 | Other hemoglobinopathies | |
| due to › hemoglobinopathy NEC › specified NEC | D58.2 | Other hemoglobinopathies | |
| due to › hemoglobinopathy NEC › tarsus | D58.2 | Other hemoglobinopathies | |
| due to › hemoglobinopathy NEC › tibia | D58.2 | Other hemoglobinopathies | |
| due to › hemoglobinopathy NEC › toe | D58.2 | Other hemoglobinopathies | |
| due to › hemoglobinopathy NEC › ulna | D58.2 | Other hemoglobinopathies | |
| due to › hemoglobinopathy NEC › vertebra | D58.2 | Other hemoglobinopathies |
Osteonecrosis specified type NEC
| carpus | M87.83 | Other osteonecrosis of radius, ulna and carpus | not billable |
| clavicle | M87.81 | Other osteonecrosis, shoulder | not billable |
| femur | M87.85 | Other osteonecrosis, pelvis and femur | not billable |
| fibula | M87.86 | Other osteonecrosis, tibia and fibula | not billable |
| finger | M87.84 | Other osteonecrosis, hand and fingers | not billable |
| humerus | M87.82 | Other osteonecrosis, humerus | not billable |
| ilium | M87.850 | Other osteonecrosis, pelvis | |
| ischium | M87.850 | Other osteonecrosis, pelvis | |
| metacarpus | M87.84 | Other osteonecrosis, hand and fingers | not billable |
| metatarsus | M87.87 | Other osteonecrosis, ankle, foot and toes | not billable |
| multiple sites | M87.89 | Other osteonecrosis, multiple sites | |
| neck | M87.88 | Other osteonecrosis, other site | |
| pubic ramus [pubis] | M87.850 | Other osteonecrosis, pelvis | |
| radius | M87.83 | Other osteonecrosis of radius, ulna and carpus | not billable |
| rib | M87.88 | Other osteonecrosis, other site | |
| scapula | M87.81 | Other osteonecrosis, shoulder | not billable |
| skull | M87.88 | Other osteonecrosis, other site | |
| tarsus | M87.87 | Other osteonecrosis, ankle, foot and toes | not billable |
| tibia | M87.86 | Other osteonecrosis, tibia and fibula | not billable |
| toe | M87.87 | Other osteonecrosis, ankle, foot and toes | not billable |
| ulna | M87.83 | Other osteonecrosis of radius, ulna and carpus | not billable |
| vertebra | M87.88 | Other osteonecrosis, other site |
Index terms and codes are reproduced from the official ICD-10-CM FY2027 release. The Alphabetic Index is a finding aid — a code must always be verified in the Tabular List before it is reported. Data sources