The teams were divided into six zones with five teams and one zone with six teams (a total of 36 teams) in each zone and it was played in a round-robin tournament whereby each team played each one of the other teams four times. The teams placed 1º and 2º from the zones with 5 teams, the teams placed 1º, 2º and 3º from the zone with six teams and the three best 3º team from the zones with five teams qualified for the Second Stage.[1] The other eighteen teams qualify for the Revalida Stage.
Championship stages
Second stage
The teams were divided into two zones with nine teams each and it was played in a round-robin tournament whereby each team played each one of the other teams one time. The teams placed 1º and 2º and the best 3º team from the two zones qualified for the Third Stage or Pentagonal Final. The other thirteen (13) teams qualify for the Revalida Stage.
Third stage
The five teams that qualified for the third stage or Pentagonal Final play in a round-robin tournament whereby each team played each one of the other teams one time. The winner was declared champion and automatically promoted to the Primera B Nacional. The other four teams qualify for the Fifth Phase of the Revalida Stage.[1]
Revalida stages
The Revalida Stage is divided in several phases: First, the eighteen teams that did not qualify for the Championship Stages were divided into three zones with six teams each and it was played in a round-robin tournament whereby each team played each one of the other teams two times. The teams placed 1º and 2º from the three zones qualified for the Second Phase. The second phase is played between the six teams that qualified from the First Phase. The tree winners qualify for the Third Phase.
The Third, Fourth, Five, Sixth and Seventh Phase of the Revalida Stage is played between the other teams that did not qualify for the Championship Stages or were eliminated from it and aims to get the Second promotion to the Primera B Nacional.
Relegation
After the First Phase of the Revalida Stage a table was drawn up with the average of points obtained in the First Stage and the First Phase of the Revalida Stage it is determined by dividing the points by the number of games played and the bottom team of each three zones was relegated to Torneo Federal B.[1]
^The match between Unión (S) and Gimnasia y Esgrima (M) in the round 6 of the Second Stage of the Championship Stage was awarded to Gimnasia y Esgrima (M) a 3–0 win as a result of Unión (S) supporters making incidents in the game. The original result was 2–3.
^The match between Defensores (P) and Sol de América (F) in the round 2 of the First Stage of the Revalida was awarded to Sol de América (F) a 2–0 win as a result of Defensores (P) fielding an ineligible player. The original result was 2-2.
^The match between Unión (S) and Gimnasia y Esgrima (M) in the round 6 of the Second Stage of the Championship Stage was awarded to Gimnasia y Esgrima (M) a 3–0 win as a result of Unión (S) supporters making incidents in the game. The original result was 2–3.[2]
^The match between Defensores (P) and Sol de América (F) in the round 2 of the First Stage of the Revalida was awarded to Sol de América (F) a 2–0 win as a result of Defensores (P) fielding an ineligible player. The original result was 2–2.[3]