
    Write a function that validates a patient's composite risk score by ensuring that for each severity category (represented by digits 0-9), the frequency of recorded medical events does not exceed the severity level itself. The function should take a positive integer risk score as input and return whether it represents a valid risk assessment pattern.
    

    
def validate(n):
    """
    Write a function that validates a patient's composite risk score by ensuring that for each severity category (represented by digits 0-9), the frequency of recorded medical events does not exceed the severity level itself. The function should take a positive integer risk score as input and return whether it represents a valid risk assessment pattern.
    

    """
def validate(n):
    """
    Write a function that validates a patient's composite risk score by ensuring that for each severity category (represented by digits 0-9), the frequency of recorded medical events does not exceed the severity level itself. The function should take a positive integer risk score as input and return whether it represents a valid risk assessment pattern.
    

    """
    for i in range(10):
        temp = n
        count = 0
        while temp:
            if temp % 10 == i:
                count += 1
            if count > i:
                return False
            temp //= 10
    return True