M76.821 is the authoritative medical code for Posterior tibial tendinitis, right leg. This classification is used in medical billing and clinical recording to specify the clinical criteria for posterior tibial tendinitis, right leg (ICD-10-CM M76.821), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Official Registry Overview & Definition
Posterior tibial tendinitis, right leg is a billable ICD-10-CM diagnosis code M76.821. Excludes2 (not included here): bursitis due to use, overuse and pressure M70.-; enthesopathies of ankle and foot M77.5-.
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for M76.821 in the official ICD-10-CM tabular list.
Excludes2 — Not Included Here
Conditions not covered by this code, but which may be reported alongside it when both are present.
- bursitis due to use, overuse and pressure M70.-
- enthesopathies of ankle and foot M77.5-
Frequently Asked Questions (FAQ) & Clinical Guidance
Can M76.821 be reported alongside related conditions?
Per Excludes2 instructions, M76.821 and the following may both be reported when both are present: bursitis due to use, overuse and pressure (M70.-); enthesopathies of ankle and foot (M77.5-).
Codes in This Family (40)
Official ICD-10-CM classifications in the same code family as M76.821, with their registry titles.
- M76 — Enthesopathies, lower limb, excluding foot
- M76.0 — Gluteal tendinitis
- M76.00 — Gluteal tendinitis, unspecified hip
- M76.01 — Gluteal tendinitis, right hip
- M76.02 — Gluteal tendinitis, left hip
- M76.1 — Psoas tendinitis
- M76.10 — Psoas tendinitis, unspecified hip
- M76.11 — Psoas tendinitis, right hip
- M76.12 — Psoas tendinitis, left hip
- M76.2 — Iliac crest spur
- M76.20 — Iliac crest spur, unspecified hip
- M76.21 — Iliac crest spur, right hip
- M76.22 — Iliac crest spur, left hip
- M76.3 — Iliotibial band syndrome
- M76.30 — Iliotibial band syndrome, unspecified leg
- M76.31 — Iliotibial band syndrome, right leg
- M76.32 — Iliotibial band syndrome, left leg
- M76.4 — Tibial collateral bursitis [Pellegrini-Stieda]
- M76.40 — Tibial collateral bursitis [Pellegrini-Stieda], unspecified leg
- M76.41 — Tibial collateral bursitis [Pellegrini-Stieda], right leg
- M76.42 — Tibial collateral bursitis [Pellegrini-Stieda], left leg
- M76.5 — Patellar tendinitis
- M76.50 — Patellar tendinitis, unspecified knee
- M76.51 — Patellar tendinitis, right knee
- M76.52 — Patellar tendinitis, left knee
- M76.6 — Achilles tendinitis
- M76.60 — Achilles tendinitis, unspecified leg
- M76.61 — Achilles tendinitis, right leg
- M76.62 — Achilles tendinitis, left leg
- M76.7 — Peroneal tendinitis
- M76.70 — Peroneal tendinitis, unspecified leg
- M76.71 — Peroneal tendinitis, right leg
- M76.72 — Peroneal tendinitis, left leg
- M76.8 — Other specified enthesopathies of lower limb, excluding foot
- M76.81 — Anterior tibial syndrome
- M76.811 — Anterior tibial syndrome, right leg
- M76.812 — Anterior tibial syndrome, left leg
- M76.819 — Anterior tibial syndrome, unspecified leg
- M76.82 — Posterior tibial tendinitis
- M76.822 — Posterior tibial tendinitis, left leg
Related Codes & Numerical Sequence (Crawl Map)
Search engines and indexers are advised to traverse adjacent medical codes in this sub-chapter range to find correlated diagnoses or therapeutic procedures:
ICD Code M80.821
Other osteoporosis with current pathological fracture, right humerus