"correct in itself" is correct and usable in written English.
You can use it when you're referring to something that is right or accurate on its own without reference to anything else. For example, "His response was correct in itself, but it didn't really address the issue at hand."
Peggy Orenstein is correct: assessment in itself is useless.
Some untidiness in the orchestra playing should surely correct itself in future performances.
No doubt Sims is correct in locating the barn itself as a major player in the story and a contributor to its eloquence about Maine life and land.
And so does the universe correct itself: in the week of the most anticipated film ever made, a new Adam Sandler release trickles on to Netflix.
Speaking to reporters on a visit to Uzbekistan, he said it would have "positive and negative consequences" for Russia and that "the situation will correct itself in the near future".
In some cases, officials conceded that they could not be sure which problems were caused by simply not having the computer capacity to handle the initial demand — a shortfall that should correct itself in time — and which might be signs of design flaws or software bugs.
More importantly, the higher return velocity really reduced opportunities for the rocket to correct itself in the event of unexpected factors like wind shear and atmospheric fluctuations — small perturbations that at this scale can have significant effects.
Altogether, clinical signs and symptoms are inappropriate for ruling out ACS or lack additive value above the clinical judgment by the GP, which on itself is correct in a majority of cases [ 6].
Occasional loose stool that corrects itself in a day or so in a pet that is otherwise acting and eating normally, is not usually a cause for concern.
Sauk et al. [ 13] suggested a problem in the epithelial component of the developing tooth germ, in which the invagination of the root sheath occurs too soon, and in a sequence of futile attempts to correct itself, results in abnormal dentin formation.
