ICD-10 Code for Enthesopathy
Also indexed as (peripheral)
The ICD-10-CM code for enthesopathy is M77.9 — Enthesopathy, unspecified. This is the code the Alphabetic Index gives for enthesopathy with no further qualifier, valid for FY2027 (October 1, 2026 – September 30, 2027).
M77.9 is billable but unspecified. If the documentation names a type, site or cause, one of the more specific codes below is likely expected.
Which enthesopathy code should you use?
The Alphabetic Index lists 17 codes under Enthesopathy. 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
| ankle and tarsus | M77.5 | Other enthesopathy of foot and ankle | not billable |
| anterior tibial syndrome | M76.81 | Anterior tibial syndrome | not billable |
| elbow region | M77.8 | Other enthesopathies, not elsewhere classified | |
| foot NEC | M77.8 | Other enthesopathies, not elsewhere classified | |
| forearm | M77.8 | Other enthesopathies, not elsewhere classified | |
| hand | M77.8 | Other enthesopathies, not elsewhere classified | |
| lower limb | M76.9 | Unspecified enthesopathy, lower limb, excluding foot | |
| multiple sites | M77.8 | Other enthesopathies, not elsewhere classified | |
| pelvis | M77.8 | Other enthesopathies, not elsewhere classified | |
| posterior tibial syndrome | M76.82 | Posterior tibial tendinitis | not billable |
| specified type NEC | M77.8 | Other enthesopathies, not elsewhere classified | |
| spinal | M46.00 | Spinal enthesopathy, site unspecified | |
| upper arm | M77.8 | Other enthesopathies, not elsewhere classified | |
| wrist and carpus NEC | M77.8 | Other enthesopathies, not elsewhere classified |
Enthesopathy foot NEC
| specified type NEC | M77.5 | Other enthesopathy of foot and ankle | not billable |
Enthesopathy lower limb
| ankle and tarsus | M77.5 | Other enthesopathy of foot and ankle | not billable |
| anterior tibial syndrome | M76.81 | Anterior tibial syndrome | not billable |
| posterior tibial syndrome | M76.82 | Posterior tibial tendinitis | not billable |
| specified type NEC | M76.89 | Other specified enthesopathies of lower limb, excluding foot | not billable |
Enthesopathy spinal
| cervical region | M46.02 | Spinal enthesopathy, cervical region | |
| cervicothoracic region | M46.03 | Spinal enthesopathy, cervicothoracic region | |
| lumbar region | M46.06 | Spinal enthesopathy, lumbar region | |
| lumbosacral region | M46.07 | Spinal enthesopathy, lumbosacral region | |
| multiple sites | M46.09 | Spinal enthesopathy, multiple sites in spine | |
| occipito-atlanto-axial region | M46.01 | Spinal enthesopathy, occipito-atlanto-axial region | |
| sacrococcygeal region | M46.08 | Spinal enthesopathy, sacral and sacrococcygeal region | |
| thoracic region | M46.04 | Spinal enthesopathy, thoracic region | |
| thoracolumbar region | M46.05 | Spinal enthesopathy, thoracolumbar region |
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