G71.11
Myotonic muscular dystrophy
Billable FY2026 2025-10-01 → 2026-09-30
Exclusions 11 never code together
G71code
G00-G99chapter
Excludes2
- certain conditions originating in the perinatal period (P04-P96)P04-P96
- certain infectious and parasitic diseases (A00-B99)A00-B99
- complications of pregnancy, childbirth and the puerperium (O00-O9A)O00-O9A
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)Q00-Q99
- endocrine, nutritional and metabolic diseases (E00-E88)E00-E88
- injury, poisoning and certain other consequences of external causes (S00-T88)S00-T88
- neoplasms (C00-D49)C00-D49
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)R00-R94
Excludes2 — not included here, but the patient may have both. Code both when documented.
Instructional notes 5
G71.11code
Inclusion terms
- Dystrophia myotonica [Steinert]
- Myotonia atrophica
- Myotonic dystrophy
- Proximal myotonic myopathy (PROMM)
- Steinert disease
Index entries leading here 11
- Myotonia (acquisita) (intermittens) M62.89
- Atrophy, atrophic (of)
- Disease, diseased — see also Syndrome
- Syndrome — see also Disease
- Batten-Steinert syndrome G71.11
- Cardiomyopathy (familial) (idiopathic) I42.9
- due to
- myotonia atrophica G71.11
- due to
- Dystrophy, dystrophia
- Curschmann (-Batten) (-Steinert) disease or syndrome G71.11
- Myocardiopathy (congestive) (constrictive) (familial) (hypertrophic nonobstructive) (idiopathic) (infiltrative) (obstructive) (primary) (restrictive) (sporadic) I42.9
- in (due to)
- myotonia atrophica G71.11
- in (due to)
- Myopathy G72.9
- Steinert's disease G71.11
Alongside this code 4 same parent — G71.1
Medications 1
MED-RT files conditions by MeSH, which carves the world differently from ICD-10. These are name matches on this code's description, offered as candidates — not as an assertion that they are this code.
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.