Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.

Inpatient Payment Groups (MS-DRG)

MS-DRGs this diagnosis helps define, as principal or secondary, per the CMS ICD-10-CM/PCS MS-DRG Definitions Manual v43.0 (FY2026), Appendix B.

MS-DRG 555 — SIGNS AND SYMPTOMS OF MUSCULOSKELETAL SYSTEM AND CONNECTIVE TISSUE WITH MCC (MDC 08)
MS-DRG 556 — SIGNS AND SYMPTOMS OF MUSCULOSKELETAL SYSTEM AND CONNECTIVE TISSUE WITHOUT MCC (MDC 08)

A diagnosis appearing in a group's logic does not by itself determine the DRG assigned to a stay; the grouper uses the full claim.

Code Set: Valid FY2026 and FY2027. FY2026 took effect October 1, 2025.

Official Registry Overview & Definition

Pain in left knee is a billable ICD-10-CM diagnosis code (M25.562).

Sequencing, inclusion, and exclusion notes published for M25.562 in the official ICD-10-CM tabular list.

Conditions not covered by this code, but which may be reported alongside it when both are present.

pain in hand (M79.64-)
pain in fingers (M79.64-)
pain in foot (M79.67-)
pain in limb (M79.6-)
pain in toes (M79.67-)
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 ICD-10-CM classifications closest to M25.562 in its code family, with their registry titles.