- Knee M23.9-

-- Ligament Disruption, Spontaneous M23.60-

--- Anterior Cruciate M23.61-

--- Capsular M23.67-

--- Instability, Chronic M23.5-

--- Lateral Collateral M23.64-

--- Medial Collateral M23.63-

--- Posterior Cruciate M23.62-

-- Loose Body M23.4-

-- Meniscus M23.30-

--- Cystic M23.00-

---- Lateral M23.002

----- Anterior Horn M23.04-

----- Posterior Horn M23.05-

----- Specified NEC M23.06-

---- Medial M23.005

----- Anterior Horn M23.01-

----- Posterior Horn M23.02-

----- Specified NEC M23.03-

--- Degenerate - see Derangement, knee, meniscus, specified NEC

--- Detached - see Derangement, knee, meniscus, specified NEC

--- Due To Old Tear Or Injury M23.20-

---- Lateral M23.20-

----- Anterior Horn M23.24-

----- Posterior Horn M23.25-

----- Specified NEC M23.26-

---- Medial M23.20-

----- Anterior Horn M23.21-

----- Posterior Horn M23.22-

----- Specified NEC M23.23-

--- Retained - see Derangement, knee, meniscus, specified NEC

--- Specified NEC M23.30-

---- Lateral M23.30-

----- Anterior Horn M23.34-

----- Posterior Horn M23.35-

----- Specified NEC M23.36-

---- Medial M23.30-

----- Anterior Horn M23.31-

----- Posterior Horn M23.32-

----- Specified NEC M23.33-

-- Old M23.8X-

-- Specified NEC M23.8