M25.171 is the authoritative medical code for Fistula, right ankle. This classification is used in medical billing and clinical recording to specify the clinical criteria for fistula, right ankle (ICD-10-CM M25.171), 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
Fistula, right ankle is a billable ICD-10-CM diagnosis code M25.171. Excludes2 (not included here): abnormality of gait and mobility R26.-; acquired deformities of limb M20-M21; calcification of bursa M71.4-; calcification of shoulder joint M75.3; calcification of tendon M65.2-; difficulty in walking R26.2; temporomandibular joint disorder M26.6-; joints of the spine M40-M54.
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for M25.171 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.
- abnormality of gait and mobility R26.-
- acquired deformities of limb M20-M21
- calcification of bursa M71.4-
- calcification of shoulder joint M75.3
- calcification of tendon M65.2-
- difficulty in walking R26.2
- temporomandibular joint disorder M26.6-
- joints of the spine M40-M54
Frequently Asked Questions (FAQ) & Clinical Guidance
Can M25.171 be reported alongside related conditions?
Per Excludes2 instructions, M25.171 and the following may both be reported when both are present: abnormality of gait and mobility (R26.-); acquired deformities of limb (M20-M21); calcification of bursa (M71.4-); calcification of shoulder (joint) (M75.3).
Codes in This Family (40)
Official ICD-10-CM classifications in the same code family as M25.171, with their registry titles.
- M25 — Other joint disorder, not elsewhere classified
- M25.0 — Hemarthrosis
- M25.00 — Hemarthrosis, unspecified joint
- M25.01 — Hemarthrosis, shoulder
- M25.011 — Hemarthrosis, right shoulder
- M25.012 — Hemarthrosis, left shoulder
- M25.019 — Hemarthrosis, unspecified shoulder
- M25.02 — Hemarthrosis, elbow
- M25.021 — Hemarthrosis, right elbow
- M25.022 — Hemarthrosis, left elbow
- M25.029 — Hemarthrosis, unspecified elbow
- M25.03 — Hemarthrosis, wrist
- M25.031 — Hemarthrosis, right wrist
- M25.032 — Hemarthrosis, left wrist
- M25.039 — Hemarthrosis, unspecified wrist
- M25.04 — Hemarthrosis, hand
- M25.041 — Hemarthrosis, right hand
- M25.042 — Hemarthrosis, left hand
- M25.049 — Hemarthrosis, unspecified hand
- M25.05 — Hemarthrosis, hip
- M25.051 — Hemarthrosis, right hip
- M25.052 — Hemarthrosis, left hip
- M25.059 — Hemarthrosis, unspecified hip
- M25.06 — Hemarthrosis, knee
- M25.061 — Hemarthrosis, right knee
- M25.062 — Hemarthrosis, left knee
- M25.069 — Hemarthrosis, unspecified knee
- M25.07 — Hemarthrosis, ankle and foot
- M25.071 — Hemarthrosis, right ankle
- M25.072 — Hemarthrosis, left ankle
- M25.073 — Hemarthrosis, unspecified ankle
- M25.074 — Hemarthrosis, right foot
- M25.075 — Hemarthrosis, left foot
- M25.076 — Hemarthrosis, unspecified foot
- M25.08 — Hemarthrosis, other specified site
- M25.1 — Fistula of joint
- M25.10 — Fistula, unspecified joint
- M25.11 — Fistula, shoulder
- M25.111 — Fistula, right shoulder
- M25.112 — Fistula, left shoulder
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: