ICD-10-CM 2027
ICD-10 code for disuse osteoporosis
From the official ICD-10-CM alphabetic index entry “Osteoporosis (female) (male) › disuse”. Page updated September 29, 2026.
About coding disuse osteoporosis
The ICD-10-CM code for disuse osteoporosis is M81.8 (Other osteoporosis without current pathological fracture). The official index lists 22 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on M81.8.
Within M81, choose M81.8 (Other osteoporosis without current pathological fracture) only when documentation doesn't support a more specific option: age-related osteoporosis without current pathological fracture (M81.0) and localized osteoporosis [Lequesne] (M81.6).
Use an additional code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5). Use an additional code to identify: major osseous defect, if applicable (M89.7-) and personal history of (healed) osteoporosis fracture, if applicable (Z87.310).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
More specific disuse osteoporosis codes (official index)
- with current pathological fracture M80.80 — Other osteoporosis with current pathological fracture, unspecified site
- carpus M80.84 — Other osteoporosis with current pathological fracture, hand
- clavicle M80.81 — Other osteoporosis with pathological fracture, shoulder
- femur M80.85 — Other osteoporosis with current pathological fracture, femur
- fibula M80.86 — Other osteoporosis with current pathological fracture, lower leg
- finger M80.84 — Other osteoporosis with current pathological fracture, hand
- hip M80.85 — Other osteoporosis with current pathological fracture, femur
- humerus M80.82 — Other osteoporosis with current pathological fracture, humerus
- ilium M80.8B — Other osteoporosis with current pathological fracture, pelvis
- ischium M80.8B — Other osteoporosis with current pathological fracture, pelvis
- metacarpus M80.84 — Other osteoporosis with current pathological fracture, hand
- metatarsus M80.87 — Other osteoporosis with current pathological fracture, ankle and foot
- pelvis M80.8B — Other osteoporosis with current pathological fracture, pelvis
- pubic ramus [pubis] M80.8B — Other osteoporosis with current pathological fracture, pelvis
- radius M80.83 — Other osteoporosis with current pathological fracture, forearm
- scapula M80.81 — Other osteoporosis with pathological fracture, shoulder
- site specified NEC M80.8A — Other osteoporosis with current pathological fracture, other site
- tarsus M80.87 — Other osteoporosis with current pathological fracture, ankle and foot
- tibia M80.86 — Other osteoporosis with current pathological fracture, lower leg
- toe M80.87 — Other osteoporosis with current pathological fracture, ankle and foot
- ulna M80.83 — Other osteoporosis with current pathological fracture, forearm
- vertebra M80.88 — Other osteoporosis with current pathological fracture, vertebra(e)
Common questions about disuse osteoporosis ICD-10 codes
What is the ICD-10 code for disuse osteoporosis?
- M81.8 — Other osteoporosis without current pathological fracture. More specific codes apply when the documentation supports them: M80.80, M80.84, M80.81, M80.85 and others below.
Is M81.8 billable?
- Yes. M81.8 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can M81.8 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict M81.8 as a principal diagnosis.
Is M81.8 a CC or MCC?
- No. M81.8 is neither a CC nor an MCC under MS-DRG v44.0.